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Xiaomeng Tong 9a1f41d77b tilcdc: tilcdc_external: fix an incorrect NULL check on list iterator

commit 8b917cbe38 upstream.

The bug is here:
	if (!encoder) {

The list iterator value 'encoder' will *always* be set and non-NULL
by list_for_each_entry(), so it is incorrect to assume that the
iterator value will be NULL if the list is empty or no element
is found.

To fix the bug, use a new variable 'iter' as the list iterator,
while use the original variable 'encoder' as a dedicated pointer
to point to the found element.

Cc: stable@vger.kernel.org
Fixes: ec9eab097a ("drm/tilcdc: Add drm bridge support for attaching drm bridge drivers")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Tested-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Jyri Sarha <jyri.sarha@iki.fi>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327061516.5076-1-xiam0nd.tong@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-06-09 10:23:29 +02:00

Kconfig

…

Makefile

doc: use KCFLAGS instead of EXTRA_CFLAGS to pass flags from command line

2021-02-22 13:59:10 -07:00

tilcdc_crtc.c

drm/tilcdc: fix pixel clock setting warning message

2021-03-24 12:05:28 +02:00

tilcdc_drv.c

drm/tilcdc: Convert to Linux IRQ interfaces

2021-08-10 20:13:53 +02:00