December 2024 - Linux-stable-mirror

[PATCH v4 04/24] ASoC: renesas: rz-ssi: Terminate all the DMA transactions

by Claudiu

From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> The stop trigger invokes rz_ssi_stop() and rz_ssi_stream_quit(). - The purpose of rz_ssi_stop() is to disable TX/RX, terminate DMA transactions, and set the controller to idle. - The purpose of rz_ssi_stream_quit() is to reset the substream-specific software data by setting strm->running and strm->substream appropriately. The function rz_ssi_is_stream_running() checks if both strm->substream and strm->running are valid and returns true if so. Its implementation is as follows: static inline bool rz_ssi_is_stream_running(struct rz_ssi_stream *strm) { return strm->substream && strm->running; } When the controller is configured in full-duplex mode (with both playback and capture active), the rz_ssi_stop() function does not modify the controller settings when called for the first substream in the full-duplex setup. Instead, it simply sets strm->running = 0 and returns if the companion substream is still running. The following code illustrates this: static int rz_ssi_stop(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) { strm->running = 0; if (rz_ssi_is_stream_running(&ssi->playback) || rz_ssi_is_stream_running(&ssi->capture)) return 0; // ... } The controller settings, along with the DMA termination (for the last stopped substream), are only applied when the last substream in the full-duplex setup is stopped. While applying the controller settings only when the last substream stops is not problematic, terminating the DMA operations for only one substream causes failures when starting and stopping full-duplex operations multiple times in a loop. To address this issue, call dmaengine_terminate_async() for both substreams involved in the full-duplex setup when the last substream in the setup is stopped. Fixes: 4f8cd05a4305 ("ASoC: sh: rz-ssi: Add full duplex support") Cc: stable(a)vger.kernel.org Reviewed-by: Biju Das <biju.das.jz(a)bp.renesas.com> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> --- Changes in v4: - updated patch description Changes in v3: - collected tags - use proper fixes commit SHA1 and description - s/sh/renesas in patch title Changes in v2: - none sound/soc/renesas/rz-ssi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c index 6efd017aaa7f..2d8721156099 100644 --- a/sound/soc/renesas/rz-ssi.c +++ b/sound/soc/renesas/rz-ssi.c @@ -415,8 +415,12 @@ static int rz_ssi_stop(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TEN | SSICR_REN, 0); /* Cancel all remaining DMA transactions */ - if (rz_ssi_is_dma_enabled(ssi)) - dmaengine_terminate_async(strm->dma_ch); + if (rz_ssi_is_dma_enabled(ssi)) { + if (ssi->playback.dma_ch) + dmaengine_terminate_async(ssi->playback.dma_ch); + if (ssi->capture.dma_ch) + dmaengine_terminate_async(ssi->capture.dma_ch); + } rz_ssi_set_idle(ssi); -- 2.39.2

10 months, 1 week

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[PATCH] leds: lp8860: Write full EEPROM, not only half of it

by A. Sverdlin

From: Alexander Sverdlin <alexander.sverdlin(a)siemens.com> I struggle to explain dividing an ARRAY_SIZE() by the size of an element once again. As the latter equals to 2, only the half of EEPROM was ever written. Drop the unexplainable division and write full ARRAY_SIZE(). Cc: stable(a)vger.kernel.org Fixes: 7a8685accb95 ("leds: lp8860: Introduce TI lp8860 4 channel LED driver") Signed-off-by: Alexander Sverdlin <alexander.sverdlin(a)siemens.com> --- This is based on code review only, I don't have LP8860 to test. drivers/leds/leds-lp8860.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c index 7a136fd817206..06196d851ade7 100644 --- a/drivers/leds/leds-lp8860.c +++ b/drivers/leds/leds-lp8860.c @@ -265,7 +265,7 @@ static int lp8860_init(struct lp8860_led *led) goto out; } - reg_count = ARRAY_SIZE(lp8860_eeprom_disp_regs) / sizeof(lp8860_eeprom_disp_regs[0]); + reg_count = ARRAY_SIZE(lp8860_eeprom_disp_regs); for (i = 0; i < reg_count; i++) { ret = regmap_write(led->eeprom_regmap, lp8860_eeprom_disp_regs[i].reg, -- 2.47.0

10 months, 1 week

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[PATCH] usb: gadget: f_uac2: Fix incorrect setting of bNumEndpoints

by Prashanth K

Currently afunc_bind sets std_ac_if_desc.bNumEndpoints to 1 if controls (mute/volume) are enabled. During next afunc_bind call, bNumEndpoints would be unchanged and incorrectly set to 1 even if the controls aren't enabled. Fix this by resetting the value of bNumEndpoints to 0 on every afunc_bind call. Fixes: eaf6cbe09920 ("usb: gadget: f_uac2: add volume and mute support") Cc: stable(a)vger.kernel.org Signed-off-by: Prashanth K <quic_prashk(a)quicinc.com> --- drivers/usb/gadget/function/f_uac2.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index ce5b77f89190..9b324821c93b 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -1185,6 +1185,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) uac2->as_in_alt = 0; } + std_ac_if_desc.bNumEndpoints = 0; if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) { uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc); if (!uac2->int_ep) { -- 2.25.1

10 months, 1 week

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Re: Patch "drm/sched: memset() 'job' in drm_sched_job_init()" has been added to the 6.12-stable tree

by Philipp Stanner

On Tue, 2024-12-10 at 15:41 -0500, Sasha Levin wrote: > This is a note to let you know that I've just added the patch titled > > drm/sched: memset() 'job' in drm_sched_job_init() > > to the 6.12-stable tree which can be found at: > > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > drm-sched-memset-job-in-drm_sched_job_init.patch > and it can be found in the queue-6.12 subdirectory. > > If you, or anyone else, feels it should not be added to the stable > tree, > please let <stable(a)vger.kernel.org> know about it. Hi, you can add it, it does improve things a bit. But I'd like to use this opportunity to understand by what criteria you found and selected this patch? Stable was not on CC, neither does the patch contain a Fixes tag. Regards, P. > > > > commit d0a6c893de0172427064e39be400a23b0ba5ffec > Author: Philipp Stanner <pstanner(a)redhat.com> > Date: Mon Oct 21 12:50:28 2024 +0200 > > drm/sched: memset() 'job' in drm_sched_job_init() > > [ Upstream commit 2320c9e6a768d135c7b0039995182bb1a4e4fd22 ] > > drm_sched_job_init() has no control over how users allocate > struct > drm_sched_job. Unfortunately, the function can also not set some > struct > members such as job->sched. > > This could theoretically lead to UB by users dereferencing the > struct's > pointer members too early. > > It is easier to debug such issues if these pointers are > initialized to > NULL, so dereferencing them causes a NULL pointer exception. > Accordingly, drm_sched_entity_init() does precisely that and > initializes > its struct with memset(). > > Initialize parameter "job" to 0 in drm_sched_job_init(). > > Signed-off-by: Philipp Stanner <pstanner(a)redhat.com> > Link: > https://patchwork.freedesktop.org/patch/msgid/20241021105028.19794-2-pstann… > Reviewed-by: Christian König <christian.koenig(a)amd.com> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/gpu/drm/scheduler/sched_main.c > b/drivers/gpu/drm/scheduler/sched_main.c > index e97c6c60bc96e..416590ea0dc3d 100644 > --- a/drivers/gpu/drm/scheduler/sched_main.c > +++ b/drivers/gpu/drm/scheduler/sched_main.c > @@ -803,6 +803,14 @@ int drm_sched_job_init(struct drm_sched_job > *job, > return -EINVAL; > } > > + /* > + * We don't know for sure how the user has allocated. Thus, > zero the > + * struct so that unallowed (i.e., too early) usage of > pointers that > + * this function does not set is guaranteed to lead to a > NULL pointer > + * exception instead of UB. > + */ > + memset(job, 0, sizeof(*job)); > + > job->entity = entity; > job->credits = credits; > job->s_fence = drm_sched_fence_alloc(entity, owner); >

10 months, 1 week

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[PATCH 1/1] USB: serial: option: add Telit FE910C04 rmnet compositions

by Daniele Palmas

Add the following Telit FE910C04 compositions: 0x10c0: rmnet + tty (AT/NMEA) + tty (AT) + tty (diag) T: Bus=02 Lev=01 Prnt=03 Port=06 Cnt=01 Dev#= 13 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1bc7 ProdID=10c0 Rev=05.15 S: Manufacturer=Telit Cinterion S: Product=FE910 S: SerialNumber=f71b8b32 C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=32ms I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=84(I) Atr=03(Int.) MxPS= 10 Ivl=32ms I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=86(I) Atr=03(Int.) MxPS= 10 Ivl=32ms I: If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms 0x10c4: rmnet + tty (AT) + tty (AT) + tty (diag) T: Bus=02 Lev=01 Prnt=03 Port=06 Cnt=01 Dev#= 14 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1bc7 ProdID=10c4 Rev=05.15 S: Manufacturer=Telit Cinterion S: Product=FE910 S: SerialNumber=f71b8b32 C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=32ms I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=84(I) Atr=03(Int.) MxPS= 10 Ivl=32ms I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=86(I) Atr=03(Int.) MxPS= 10 Ivl=32ms I: If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms 0x10c8: rmnet + tty (AT) + tty (diag) + DPL (data packet logging) + adb T: Bus=02 Lev=01 Prnt=03 Port=06 Cnt=01 Dev#= 17 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1bc7 ProdID=10c8 Rev=05.15 S: Manufacturer=Telit Cinterion S: Product=FE910 S: SerialNumber=f71b8b32 C: #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=32ms I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=84(I) Atr=03(Int.) MxPS= 10 Ivl=32ms I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I: If#= 3 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=80 Driver=(none) E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I: If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none) E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms Signed-off-by: Daniele Palmas <dnlplm(a)gmail.com> Cc: stable(a)vger.kernel.org --- drivers/usb/serial/option.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 9ba5584061c8..5680bd155a94 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1395,6 +1395,12 @@ static const struct usb_device_id option_ids[] = { .driver_info = RSVD(0) | NCTRL(2) | RSVD(3) | RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x10aa, 0xff), /* Telit FN920C04 (MBIM) */ .driver_info = NCTRL(3) | RSVD(4) | RSVD(5) }, + { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x10c0, 0xff), /* Telit FE910C04 (rmnet) */ + .driver_info = RSVD(0) | NCTRL(3) }, + { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x10c4, 0xff), /* Telit FE910C04 (rmnet) */ + .driver_info = RSVD(0) | NCTRL(3) }, + { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x10c8, 0xff), /* Telit FE910C04 (rmnet) */ + .driver_info = RSVD(0) | NCTRL(2) | RSVD(3) | RSVD(4) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910), .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM), -- 2.37.1

10 months, 1 week

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[PATCH] media: intel/ipu6: remove cpu latency qos request on error

by Stanislaw Gruszka

Fix cpu latency qos list corruption like below. It happens when we do not remove cpu latency request on error path and free corresponding memory. [ 30.634378] l7 kernel: list_add corruption. prev->next should be next (ffffffff9645e960), but was 0000000100100001. (prev=ffff8e9e877e20a8). [ 30.634388] l7 kernel: WARNING: CPU: 2 PID: 2008 at lib/list_debug.c:32 __list_add_valid_or_report+0x83/0xa0 <snip> [ 30.634640] l7 kernel: Call Trace: [ 30.634650] l7 kernel: <TASK> [ 30.634659] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634669] l7 kernel: ? __warn.cold+0x93/0xf6 [ 30.634678] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634690] l7 kernel: ? report_bug+0xff/0x140 [ 30.634702] l7 kernel: ? handle_bug+0x58/0x90 [ 30.634712] l7 kernel: ? exc_invalid_op+0x17/0x70 [ 30.634723] l7 kernel: ? asm_exc_invalid_op+0x1a/0x20 [ 30.634733] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634742] l7 kernel: plist_add+0xdd/0x140 [ 30.634754] l7 kernel: pm_qos_update_target+0xa0/0x1f0 [ 30.634764] l7 kernel: cpu_latency_qos_update_request+0x61/0xc0 [ 30.634773] l7 kernel: intel_dp_aux_xfer+0x4c7/0x6e0 [i915 1f824655ed04687c2b0d23dbce759fa785f6d033] Reported-by: Genes Lists <lists(a)sapience.com> Fixes: f50c4ca0a820 ("media: intel/ipu6: add the main input system driver") Cc: stable(a)vger.kernel.org Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka(a)linux.intel.com> --- drivers/media/pci/intel/ipu6/ipu6-isys.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.c b/drivers/media/pci/intel/ipu6/ipu6-isys.c index 77f9c7319868..8df1d83a74b5 100644 --- a/drivers/media/pci/intel/ipu6/ipu6-isys.c +++ b/drivers/media/pci/intel/ipu6/ipu6-isys.c @@ -1133,6 +1133,7 @@ static int isys_probe(struct auxiliary_device *auxdev, free_fw_msg_bufs: free_fw_msg_bufs(isys); out_remove_pkg_dir_shared_buffer: + cpu_latency_qos_remove_request(&isys->pm_qos); if (!isp->secure_mode) ipu6_cpd_free_pkg_dir(adev); remove_shared_buffer: -- 2.34.1

10 months, 1 week

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[PATCH 6.1 v2] media: mediatek: vcodec: Handle invalid decoder vsi

by bin.lan.cn＠eng.windriver.com

From: Irui Wang <irui.wang(a)mediatek.com> [ Upstream commit 59d438f8e02ca641c58d77e1feffa000ff809e9f ] Handle an invalid decoder vsi in vpu_dec_init to ensure the decoder vsi is valid for future use. Fixes: 590577a4e525 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver") Signed-off-by: Irui Wang <irui.wang(a)mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Signed-off-by: Sebastian Fricke <sebastian.fricke(a)collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> [ Replace mtk_vdec_err with mtk_vcodec_err to make it work on 6.1 ] Signed-off-by: Bin Lan <bin.lan.cn(a)windriver.com> --- drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c b/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c index df309e8e9379..af3fc89b6cc5 100644 --- a/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c +++ b/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c @@ -213,6 +213,12 @@ int vpu_dec_init(struct vdec_vpu_inst *vpu) mtk_vcodec_debug(vpu, "vdec_inst=%p", vpu); err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg)); + + if (IS_ERR_OR_NULL(vpu->vsi)) { + mtk_vcodec_err(vpu, "invalid vdec vsi, status=%d", err); + return -EINVAL; + } + mtk_vcodec_debug(vpu, "- ret=%d", err); return err; } -- 2.43.0

10 months, 1 week

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.4-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 11:17 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.4-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.4 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's even more surprising to see such a patch added here. Because the patch applied is not a guarantee that it makes sense. Plus your script is a little bit too greedy: there were no "Fixes" nor "stable" tags added... Cheers, Benjamin > > > > commit 1fbcf8b1b86db5517d82b5ff571a794e64f7098a > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

10 months, 1 week

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.10-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 10:40 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.10-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.10 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's surprising to see such a patch added here. Cheers, Benjamin > > > commit 6a88aee0a4644ce4b15bbaadb7d1f1ce2c0e0c6c > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

10 months, 1 week

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.15-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 10:36 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.15-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.15 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's even more surprisingly surprising to see such a patch added here. Cheers, Benjamin > > > > commit cd9ab7edb94431f02c68383c089dc12fbbe00475 > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

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Linux-stable-mirror December 2024