4.4-stable review patch. If anyone has any objections, please let me know.
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From: Eugeniu Rosca roscaeugeniu@gmail.com
[ Upstream commit eec24f2a0d4dc3b1d95a3ccd2feb523ede3ba775 ]
The list [1] of commits doing endianness fixes in USB subsystem is long due to below quote from USB spec Revision 2.0 from April 27, 2000:
------------ 8.1 Byte/Bit Ordering
Multiple byte fields in standard descriptors, requests, and responses are interpreted as and moved over the bus in little-endian order, i.e. LSB to MSB. ------------
This commit belongs to the same family.
[1] Example of endianness fixes in USB subsystem: commit 14e1d56cbea6 ("usb: gadget: f_uac2: endianness fixes.") commit 42370b821168 ("usb: gadget: f_uac1: endianness fixes.") commit 63afd5cc7877 ("USB: chaoskey: fix Alea quirk on big-endian hosts") commit 74098c4ac782 ("usb: gadget: acm: fix endianness in notifications") commit cdd7928df0d2 ("ACM gadget: fix endianness in notifications") commit 323ece54e076 ("cdc-wdm: fix endianness bug in debug statements") commit e102609f1072 ("usb: gadget: uvc: Fix endianness mismatches") list goes on
Fixes: 132fcb460839 ("usb: gadget: Add Audio Class 2.0 Driver") Signed-off-by: Eugeniu Rosca erosca@de.adit-jv.com Reviewed-by: Ruslan Bilovol ruslan.bilovol@gmail.com Signed-off-by: Felipe Balbi felipe.balbi@linux.intel.com
Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/gadget/function/f_uac2.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
--- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -941,14 +941,14 @@ static struct usb_descriptor_header *hs_ };
struct cntrl_cur_lay3 { - __u32 dCUR; + __le32 dCUR; };
struct cntrl_range_lay3 { - __u16 wNumSubRanges; - __u32 dMIN; - __u32 dMAX; - __u32 dRES; + __le16 wNumSubRanges; + __le32 dMIN; + __le32 dMAX; + __le32 dRES; } __packed;
static inline void @@ -1296,9 +1296,9 @@ in_rq_cur(struct usb_function *fn, const memset(&c, 0, sizeof(struct cntrl_cur_lay3));
if (entity_id == USB_IN_CLK_ID) - c.dCUR = p_srate; + c.dCUR = cpu_to_le32(p_srate); else if (entity_id == USB_OUT_CLK_ID) - c.dCUR = c_srate; + c.dCUR = cpu_to_le32(c_srate);
value = min_t(unsigned, w_length, sizeof c); memcpy(req->buf, &c, value); @@ -1336,15 +1336,15 @@ in_rq_range(struct usb_function *fn, con
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { if (entity_id == USB_IN_CLK_ID) - r.dMIN = p_srate; + r.dMIN = cpu_to_le32(p_srate); else if (entity_id == USB_OUT_CLK_ID) - r.dMIN = c_srate; + r.dMIN = cpu_to_le32(c_srate); else return -EOPNOTSUPP;
r.dMAX = r.dMIN; r.dRES = 0; - r.wNumSubRanges = 1; + r.wNumSubRanges = cpu_to_le16(1);
value = min_t(unsigned, w_length, sizeof r); memcpy(req->buf, &r, value);