Zile Xiong a562d6dc86 media: vb2: use ssize_t for vb2_read/vb2_write ... vb2_read() and vb2_write() return size_t, but propagate negative errno values from __vb2_perform_fileio(). This relies on implicit signed/unsigned conversions in callers (e.g. vb2_fop_read()) to recover error codes: __vb2_perform_fileio() -> -EINVAL vb2_read() -> (size_t)-EINVAL vb2_fop_read() -> -EINVAL This relies on implicit conversions that are not obvious. These helpers are exported (EXPORT_SYMBOL_GPL) and part of the vb2 API, so changing their return type may affect existing users. However, they conceptually follow read/write semantics, where ssize_t is typically used to return either a byte count or a negative error code. Switch vb2_read() and vb2_write() to ssize_t, and update __vb2_perform_fileio() accordingly. Signed-off-by: Zile Xiong <xiongzile99@gmail.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: b25748fe61 ("[media] v4l: videobuf2: add read() and write() emulator") Cc: stable@vger.kernel.org Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>		2026-05-06 09:05:56 +02:00
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b2c2
saa7146
siano
v4l2-tpg
videobuf2	media: vb2: use ssize_t for vb2_read/vb2_write	2026-05-06 09:05:56 +02:00
cx2341x.c
cypress_firmware.c
cypress_firmware.h
Kconfig
Makefile
ttpci-eeprom.c
ttpci-eeprom.h
tveeprom.c
uvc.c