- Linux-stable-mirror - lists.linaro.org

[PATCH v2 0/2] media: staging: imx: fix multiple video input

by Michael Tretter

If the IMX media pipeline is configured to receive multiple video inputs, the second input stream may be broken on start. This happens if the IMX CSI hardware has to be reconfigured for the second stream, while the first stream is already running. The IMX CSI driver configures the IMX CSI in the link_validate callback. The media pipeline is only validated on the first start. Thus, any later start of the media pipeline skips the validation and directly starts streaming. This may leave the hardware in an inconsistent state compared to the driver configuration. Moving the hardware configuration to the stream start to make sure that the hardware is configured correctly. Patch 1 removes the caching of the upstream mbus_config in csi_link_validate and explicitly request the mbus_config in csi_start, to get rid of this implicit dependency. Patch 2 actually moves the hardware register setting from csi_link_validate to csi_start to fix the skipped hardware reconfiguration. Signed-off-by: Michael Tretter <michael.tretter(a)pengutronix.de> --- Changes in v2: - Document changed locking in commit message - Link to v1: https://lore.kernel.org/r/20251105-media-imx-fixes-v1-0-99e48b4f5cbc@pengut… --- Michael Tretter (2): media: staging: imx: request mbus_config in csi_start media: staging: imx: configure src_mux in csi_start drivers/staging/media/imx/imx-media-csi.c | 84 ++++++++++++++++++------------- 1 file changed, 48 insertions(+), 36 deletions(-) --- base-commit: 27afd6e066cfd80ddbe22a4a11b99174ac89cced change-id: 20251105-media-imx-fixes-acef77c7ba12 Best regards, -- Michael Tretter <m.tretter(a)pengutronix.de>

3 weeks, 1 day

3
5
0 0

[PATCH 2/2] media: mxl111sf: fix i2c race condition during device probe

by Nalivayko Sergey

syzbot reports a KASAN issue as below: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] CPU: 1 UID: 0 PID: 5849 Comm: syz-executor279 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:580 [inline] RIP: 0010:__mutex_lock+0x15d/0x10c0 kernel/locking/mutex.c:746 Call Trace: <TASK> dvb_usbv2_generic_write+0x26/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77 mxl111sf_ctrl_msg+0x172/0x2e0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73 mxl111sf_write_reg+0xda/0x1f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline] mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline] mxl111sf_i2c_xfer+0x923/0x8aa0 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813 __i2c_transfer+0x859/0x2250 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x2c2/0x430 drivers/i2c/i2c-core-base.c:2315 i2c_transfer_buffer_flags+0x182/0x260 drivers/i2c/i2c-core-base.c:2343 i2c_master_recv include/linux/i2c.h:79 [inline] i2cdev_read+0x10a/0x220 drivers/i2c/i2c-dev.c:155 vfs_read+0x21f/0xb90 fs/read_write.c:568 ksys_read+0x19d/0x2d0 fs/read_write.c:713 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> This occurs due to a race condition during DVB-USB-V2 device initialization. While initialization is in progress, I2C data may be read from userspace, leading to a NULL pointer dereference in dvb_usbv2_generic_write and a kernel panic. Thread 1 (probe device) Thread 2 (receive i2c data) ... dvb_usbv2_probe() ... d->priv = kzalloc( d->props->size_of_priv, GFP_KERNEL); ... dvb_usbv2_init() ... // can read data from i2c dvb_usbv2_i2c_init() ... ... i2cdev_read() ... // d->priv data is invalid. UB mxl111sf_i2c_xfer() ... mxl111sf_ctrl_msg() ... // null ptr deref dvb_usbv2_generic_write() ... ... // d->priv data is valid dvb_usbv2_adapter_init() ... Add init_ready flag check to prevent I/O on uninitialized DVB-USB-V2 device. Reported-by: syzbot+f9f5333782a854509322(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f9f5333782a854509322 Fixes: 4c66c9205c07 ("[media] dvb-usb: add ATSC support for the Hauppauge WinTV-Aero-M") Cc: stable(a)vger.kernel.org Signed-off-by: Nalivayko Sergey <Sergey.Nalivayko(a)kaspersky.com> --- drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c b/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c index 100a1052dcbc..b7bad90b16dc 100644 --- a/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c +++ b/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c @@ -804,7 +804,7 @@ int mxl111sf_i2c_xfer(struct i2c_adapter *adap, int hwi2c = (state->chip_rev > MXL111SF_V6); int i, ret; - if (mutex_lock_interruptible(&d->i2c_mutex) < 0) + if (!atomic_read(&d->init_ready) || mutex_lock_interruptible(&d->i2c_mutex) < 0) return -EAGAIN; for (i = 0; i < num; i++) { -- 2.39.5

3 weeks, 1 day

1
0
0 0

[PATCH v3 0/2] Fix SSR unable to wake up bug

by Shuai Zhang

This patch series fixes delayed hw_error handling during SSR. Patch 1 adds a wakeup to ensure hw_error is processed promptly after coredump collection. Patch 2 corrects the timeout unit from jiffies to ms. Changes v3: - patch2 add Fixes tag - Link to v2 https://lore.kernel.org/all/20251106140103.1406081-1-quic_shuaz@quicinc.com/ Changes v2: - Split timeout conversion into a separate patch. - Clarified commit messages and added test case description. - Link to v1 https://lore.kernel.org/all/20251104112601.2670019-1-quic_shuaz@quicinc.com/ Shuai Zhang (2): Bluetooth: qca: Fix delayed hw_error handling due to missing wakeup during SSR Bluetooth: hci_qca: Convert timeout from jiffies to ms drivers/bluetooth/hci_qca.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) -- 2.34.1

3 weeks, 1 day

3
4
0 0

[PATCH v11 1/3] NFSD: Make FILE_SYNC WRITEs comply with spec

by Chuck Lever

From: Chuck Lever <chuck.lever(a)oracle.com> Mike noted that when NFSD responds to an NFS_FILE_SYNC WRITE, it does not also persist file time stamps. To wit, Section 18.32.3 of RFC 8881 mandates: > The client specifies with the stable parameter the method of how > the data is to be processed by the server. If stable is > FILE_SYNC4, the server MUST commit the data written plus all file > system metadata to stable storage before returning results. This > corresponds to the NFSv2 protocol semantics. Any other behavior > constitutes a protocol violation. If stable is DATA_SYNC4, then > the server MUST commit all of the data to stable storage and > enough of the metadata to retrieve the data before returning. Commit 3f3503adb332 ("NFSD: Use vfs_iocb_iter_write()") replaced: - flags |= RWF_SYNC; with: + kiocb.ki_flags |= IOCB_DSYNC; which appears to be correct given: if (flags & RWF_SYNC) kiocb_flags |= IOCB_DSYNC; in kiocb_set_rw_flags(). However the author of that commit did not appreciate that the previous line in kiocb_set_rw_flags() results in IOCB_SYNC also being set: kiocb_flags |= (__force int) (flags & RWF_SUPPORTED); RWF_SUPPORTED contains RWF_SYNC, and RWF_SYNC is the same bit as IOCB_SYNC. Reviewers at the time did not catch the omission. Reported-by: Mike Snitzer <snitzer(a)kernel.org> Closes: https://lore.kernel.org/linux-nfs/20251018005431.3403-1-cel@kernel.org/T/#t Fixes: 3f3503adb332 ("NFSD: Use vfs_iocb_iter_write()") Cc: stable(a)vger.kernel.org Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Reviewed-by: NeilBrown <neil(a)brown.name> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> --- fs/nfsd/vfs.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index f537a7b4ee01..5333d49910d9 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1314,8 +1314,18 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, stable = NFS_UNSTABLE; init_sync_kiocb(&kiocb, file); kiocb.ki_pos = offset; - if (stable && !fhp->fh_use_wgather) - kiocb.ki_flags |= IOCB_DSYNC; + if (likely(!fhp->fh_use_wgather)) { + switch (stable) { + case NFS_FILE_SYNC: + /* persist data and timestamps */ + kiocb.ki_flags |= IOCB_DSYNC | IOCB_SYNC; + break; + case NFS_DATA_SYNC: + /* persist data only */ + kiocb.ki_flags |= IOCB_DSYNC; + break; + } + } nvecs = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, payload); iov_iter_bvec(&iter, ITER_SOURCE, rqstp->rq_bvec, nvecs, *cnt); -- 2.51.0

3 weeks, 1 day

1
0
0 0

[PATCH AUTOSEL 6.17] serial: qcom-geni: Add DFS clock mode support to GENI UART driver

by Sasha Levin

From: Viken Dadhaniya <viken.dadhaniya(a)oss.qualcomm.com> [ Upstream commit fc6a5b540c02d1ec624e4599f45a17f2941a5c00 ] GENI UART driver currently supports only non-DFS (Dynamic Frequency Scaling) mode for source frequency selection. However, to operate correctly in DFS mode, the GENI SCLK register must be programmed with the appropriate DFS index. Failing to do so can result in incorrect frequency selection Add support for Dynamic Frequency Scaling (DFS) mode in the GENI UART driver by configuring the GENI_CLK_SEL register with the appropriate DFS index. This ensures correct frequency selection when operating in DFS mode. Replace the UART driver-specific logic for clock selection with the GENI common driver function to obtain the desired frequency and corresponding clock index. This improves maintainability and consistency across GENI-based drivers. Signed-off-by: Viken Dadhaniya <viken.dadhaniya(a)oss.qualcomm.com> Link: https://lore.kernel.org/r/20250903063136.3015237-1-viken.dadhaniya@oss.qual… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: YES - Fixes a real bug in DFS mode: The UART driver previously never programmed the GENI DFS clock selection register, so on platforms where the GENI core clock runs in Dynamic Frequency Scaling (DFS) mode, UART could pick the wrong source clock and thus the wrong baud. This change explicitly programs the DFS index so the selected source frequency matches the computed divider. - New write of the DFS index to the hardware register: drivers/tty/serial/qcom_geni_serial.c:1306 - DFS clock select register and mask exist in the common header: include/linux/soc/qcom/geni-se.h:85, include/linux/soc/qcom/geni- se.h:145 - Uses the common GENI clock-matching helper instead of ad‑hoc logic: The patch replaces driver-local clock rounding/tolerance code with the GENI core’s frequency matching routine, ensuring consistent clock selection across GENI-based drivers and improving maintainability. - New source frequency selection via common helper: drivers/tty/serial/qcom_geni_serial.c:1270 - Common helper is present and exported in the GENI core: drivers/soc/qcom/qcom-geni-se.c:720 - Maintains existing divisor programming and adds a safety check: The driver still computes and programs the serial clock divider, now with a guard to avoid overflow of the divider field. - Divider computation and range check: drivers/tty/serial/qcom_geni_serial.c:1277, drivers/tty/serial/qcom_geni_serial.c:1279 - Divider write to both M/S clock cfg registers remains as before: drivers/tty/serial/qcom_geni_serial.c:1303, drivers/tty/serial/qcom_geni_serial.c:1304 - Consistency with other GENI drivers already using DFS index programming: Other GENI protocol drivers (e.g., SPI) already program `SE_GENI_CLK_SEL` with the index returned by the common helper, so this change aligns UART with established practice and reduces risk. - SPI uses the same pattern: drivers/spi/spi-geni-qcom.c:383, drivers/spi/spi-geni-qcom.c:385–386 - Small, contained, and low-risk: - Touches a single driver file with a localized change in clock setup. - No ABI or architectural changes; relies on existing GENI core helpers and headers. - Additional register write is standard and used by other GENI drivers; masks index with `CLK_SEL_MSK` (include/linux/soc/qcom/geni-se.h:145) for safety. - Includes defensive error handling if no matching clock level is found and a divider overflow guard (drivers/tty/serial/qcom_geni_serial.c:1271–1275, drivers/tty/serial/qcom_geni_serial.c:1279–1281). - User impact: Without this, UART on DFS-enabled platforms can run at an incorrect baud, causing broken serial communication (including console). The fix directly addresses that functional issue. - Stable backport criteria: - Fixes an important, user-visible bug (incorrect baud under DFS). - Minimal and self-contained change, no new features or interfaces. - Leverages existing, widely used GENI core APIs already present in stable series. Note: One minor nit in the debug print includes an extra newline before `clk_idx`, but it’s harmless and does not affect functionality (drivers/tty/serial/qcom_geni_serial.c:1284). drivers/tty/serial/qcom_geni_serial.c | 92 ++++++--------------------- 1 file changed, 21 insertions(+), 71 deletions(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 81f385d900d06..ff401e331f1bb 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1,5 +1,8 @@ // SPDX-License-Identifier: GPL-2.0 -// Copyright (c) 2017-2018, The Linux foundation. All rights reserved. +/* + * Copyright (c) 2017-2018, The Linux foundation. All rights reserved. + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ /* Disable MMIO tracing to prevent excessive logging of unwanted MMIO traces */ #define __DISABLE_TRACE_MMIO__ @@ -1253,75 +1256,15 @@ static int qcom_geni_serial_startup(struct uart_port *uport) return 0; } -static unsigned long find_clk_rate_in_tol(struct clk *clk, unsigned int desired_clk, - unsigned int *clk_div, unsigned int percent_tol) -{ - unsigned long freq; - unsigned long div, maxdiv; - u64 mult; - unsigned long offset, abs_tol, achieved; - - abs_tol = div_u64((u64)desired_clk * percent_tol, 100); - maxdiv = CLK_DIV_MSK >> CLK_DIV_SHFT; - div = 1; - while (div <= maxdiv) { - mult = (u64)div * desired_clk; - if (mult != (unsigned long)mult) - break; - - offset = div * abs_tol; - freq = clk_round_rate(clk, mult - offset); - - /* Can only get lower if we're done */ - if (freq < mult - offset) - break; - - /* - * Re-calculate div in case rounding skipped rates but we - * ended up at a good one, then check for a match. - */ - div = DIV_ROUND_CLOSEST(freq, desired_clk); - achieved = DIV_ROUND_CLOSEST(freq, div); - if (achieved <= desired_clk + abs_tol && - achieved >= desired_clk - abs_tol) { - *clk_div = div; - return freq; - } - - div = DIV_ROUND_UP(freq, desired_clk); - } - - return 0; -} - -static unsigned long get_clk_div_rate(struct clk *clk, unsigned int baud, - unsigned int sampling_rate, unsigned int *clk_div) -{ - unsigned long ser_clk; - unsigned long desired_clk; - - desired_clk = baud * sampling_rate; - if (!desired_clk) - return 0; - - /* - * try to find a clock rate within 2% tolerance, then within 5% - */ - ser_clk = find_clk_rate_in_tol(clk, desired_clk, clk_div, 2); - if (!ser_clk) - ser_clk = find_clk_rate_in_tol(clk, desired_clk, clk_div, 5); - - return ser_clk; -} - static int geni_serial_set_rate(struct uart_port *uport, unsigned int baud) { struct qcom_geni_serial_port *port = to_dev_port(uport); unsigned long clk_rate; - unsigned int avg_bw_core; + unsigned int avg_bw_core, clk_idx; unsigned int clk_div; u32 ver, sampling_rate; u32 ser_clk_cfg; + int ret; sampling_rate = UART_OVERSAMPLING; /* Sampling rate is halved for IP versions >= 2.5 */ @@ -1329,17 +1272,22 @@ static int geni_serial_set_rate(struct uart_port *uport, unsigned int baud) if (ver >= QUP_SE_VERSION_2_5) sampling_rate /= 2; - clk_rate = get_clk_div_rate(port->se.clk, baud, - sampling_rate, &clk_div); - if (!clk_rate) { - dev_err(port->se.dev, - "Couldn't find suitable clock rate for %u\n", - baud * sampling_rate); + ret = geni_se_clk_freq_match(&port->se, baud * sampling_rate, &clk_idx, &clk_rate, false); + if (ret) { + dev_err(port->se.dev, "Failed to find src clk for baud rate: %d ret: %d\n", + baud, ret); + return ret; + } + + clk_div = DIV_ROUND_UP(clk_rate, baud * sampling_rate); + /* Check if calculated divider exceeds maximum allowed value */ + if (clk_div > (CLK_DIV_MSK >> CLK_DIV_SHFT)) { + dev_err(port->se.dev, "Calculated clock divider %u exceeds maximum\n", clk_div); return -EINVAL; } - dev_dbg(port->se.dev, "desired_rate = %u, clk_rate = %lu, clk_div = %u\n", - baud * sampling_rate, clk_rate, clk_div); + dev_dbg(port->se.dev, "desired_rate = %u, clk_rate = %lu, clk_div = %u\n, clk_idx = %u\n", + baud * sampling_rate, clk_rate, clk_div, clk_idx); uport->uartclk = clk_rate; port->clk_rate = clk_rate; @@ -1359,6 +1307,8 @@ static int geni_serial_set_rate(struct uart_port *uport, unsigned int baud) writel(ser_clk_cfg, uport->membase + GENI_SER_M_CLK_CFG); writel(ser_clk_cfg, uport->membase + GENI_SER_S_CLK_CFG); + /* Configure clock selection register with the selected clock index */ + writel(clk_idx & CLK_SEL_MSK, uport->membase + SE_GENI_CLK_SEL); return 0; } -- 2.51.0

3 weeks, 1 day

17
498
0 0

[PATCH] drm/i915/dp_mst: Disable Panel Replay

by Imre Deak

Disable Panel Replay on MST links until it's properly implemented. For instance the required VSC SDP is not programmed on MST and FEC is not enabled if Panel Replay is enabled. Fixes: 3257e55d3ea7 ("drm/i915/panelreplay: enable/disable panel replay") Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15174 Cc: Jouni Högander <jouni.hogander(a)intel.com> Cc: Animesh Manna <animesh.manna(a)intel.com> Cc: stable(a)vger.kernel.org # v6.8+ Signed-off-by: Imre Deak <imre.deak(a)intel.com> --- drivers/gpu/drm/i915/display/intel_psr.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 05014ffe3ce1d..54fc30cfad84c 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -626,6 +626,10 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp) struct intel_display *display = to_intel_display(intel_dp); int ret; + /* TODO: Enable Panel Replay on MST once it's properly implemented. */ + if (intel_dp->mst_detect == DRM_DP_MST) + return; + ret = drm_dp_dpcd_read_data(&intel_dp->aux, DP_PANEL_REPLAY_CAP_SUPPORT, &intel_dp->pr_dpcd, sizeof(intel_dp->pr_dpcd)); if (ret < 0) -- 2.49.1

3 weeks, 1 day

2
1
0 0

[PATCH v5 1/2] dt-bindings: media: qcom,qcs8300-camss: Add missing power supplies

by Vikram Sharma

Add support for vdda-phy-supply and vdda-pll-supply in the QCS8300 CAMSS binding. Fixes: 634a2958fae30 ("media: dt-bindings: Add qcom,qcs8300-camss compatible") Cc: <stable(a)vger.kernel.org> Co-developed-by: Nihal Kumar Gupta <quic_nihalkum(a)quicinc.com> Signed-off-by: Nihal Kumar Gupta <quic_nihalkum(a)quicinc.com> Signed-off-by: Vikram Sharma <quic_vikramsa(a)quicinc.com> --- .../bindings/media/qcom,qcs8300-camss.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/media/qcom,qcs8300-camss.yaml b/Documentation/devicetree/bindings/media/qcom,qcs8300-camss.yaml index 80a4540a22dc..e5f170aa4d9e 100644 --- a/Documentation/devicetree/bindings/media/qcom,qcs8300-camss.yaml +++ b/Documentation/devicetree/bindings/media/qcom,qcs8300-camss.yaml @@ -120,6 +120,14 @@ properties: items: - const: top + vdda-phy-supply: + description: + Phandle to a 0.88V regulator supply to CSI PHYs. + + vdda-pll-supply: + description: + Phandle to 1.2V regulator supply to CSI PHYs pll block. + ports: $ref: /schemas/graph.yaml#/properties/ports @@ -160,6 +168,8 @@ required: - power-domains - power-domain-names - ports + - vdda-phy-supply + - vdda-pll-supply additionalProperties: false @@ -328,6 +338,9 @@ examples: power-domains = <&camcc CAM_CC_TITAN_TOP_GDSC>; power-domain-names = "top"; + vdda-phy-supply = <&vreg_l4a_0p88>; + vdda-pll-supply = <&vreg_l1c_1p2>; + ports { #address-cells = <1>; #size-cells = <0>; -- 2.34.1

3 weeks, 1 day

2
1
0 0

[PATCH] drm/i915/psr: Reject async flips when selective fetch is enabled

by Ville Syrjala

From: Ville Syrjälä <ville.syrjala(a)linux.intel.com> The selective fetch code doesn't handle asycn flips correctly. There is a nonsense check for async flips in intel_psr2_sel_fetch_config_valid() but that only gets called for modesets/fastsets and thus does nothing for async flips. Currently intel_async_flip_check_hw() is very unhappy as the selective fetch code pulls in planes that are not even async flips capable. Reject async flips when selective fetch is enabled, until someone fixes this properly (ie. disable selective fetch while async flips are being issued). Cc: stable(a)vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala(a)linux.intel.com> --- drivers/gpu/drm/i915/display/intel_display.c | 8 ++++++++ drivers/gpu/drm/i915/display/intel_psr.c | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 42ec78798666..10583592fefe 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -6020,6 +6020,14 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state, return -EINVAL; } + /* FIXME: selective fetch should be disabled for async flips */ + if (new_crtc_state->enable_psr2_sel_fetch) { + drm_dbg_kms(display->drm, + "[CRTC:%d:%s] async flip disallowed with PSR2 selective fetch\n", + crtc->base.base.id, crtc->base.name); + return -EINVAL; + } + for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { if (plane->pipe != crtc->pipe) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 05014ffe3ce1..65d77aea9536 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1296,12 +1296,6 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp, return false; } - if (crtc_state->uapi.async_flip) { - drm_dbg_kms(display->drm, - "PSR2 sel fetch not enabled, async flip enabled\n"); - return false; - } - return crtc_state->enable_psr2_sel_fetch = true; } -- 2.49.1

3 weeks, 1 day

3
2
0 0

[for-linus][PATCH 1/3] ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> The function ring_buffer_map_get_reader() is a bit more strict than the other get reader functions, and except for certain situations the rb_get_reader_page() should not return NULL. If it does, it triggers a warning. This warning was triggering but after looking at why, it was because another acceptable situation was happening and it wasn't checked for. If the reader catches up to the writer and there's still data to be read on the reader page, then the rb_get_reader_page() will return NULL as there's no new page to get. In this situation, the reader page should not be updated and no warning should trigger. Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Cc: Vincent Donnefort <vdonnefort(a)google.com> Reported-by: syzbot+92a3745cea5ec6360309(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/690babec.050a0220.baf87.0064.GAE@google.com/ Link: https://lore.kernel.org/20251016132848.1b11bb37@gandalf.local.home Fixes: 117c39200d9d7 ("ring-buffer: Introducing ring-buffer mapping functions") Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/ring_buffer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 1244d2c5c384..afcd3747264d 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -7344,6 +7344,10 @@ int ring_buffer_map_get_reader(struct trace_buffer *buffer, int cpu) goto out; } + /* Did the reader catch up with the writer? */ + if (cpu_buffer->reader_page == cpu_buffer->commit_page) + goto out; + reader = rb_get_reader_page(cpu_buffer); if (WARN_ON(!reader)) goto out; -- 2.51.0

3 weeks, 1 day

1
0
0 0

[PATCH v1] Bluetooth: btusb: add new custom firmwares

by Shuai Zhang

There are custom-made firmwares based on board ID for a given QCA BT chip sometimes, and they are different with existing firmwares and put in a separate subdirectory to avoid conflict, for example: QCA2066, as a variant of WCN6855, has firmwares under 'qca/QCA2066/' of linux-firmware repository. Cc: stable(a)vger.kernel.org Signed-off-by: Shuai Zhang <quic_shuaz(a)quicinc.com> --- drivers/bluetooth/btusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index dcbff7641..7175e9b2d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3273,6 +3273,7 @@ static const struct qca_device_info qca_devices_table[] = { static const struct qca_custom_firmware qca_custom_btfws[] = { { 0x00130201, 0x030A, "QCA2066" }, + { 0x00130201, 0x030B, "QCA2066" }, { }, }; -- 2.34.1

3 weeks, 1 day

2
2
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

Linux-stable-mirror