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linux/drivers/auxdisplay/charlcd.c
Luiz Sampaio 4daa9ff89e auxdisplay: charlcd: checking for pointer reference before dereferencing 
Check if the pointer lcd->ops->init_display exists before dereferencing it.
If a driver called charlcd_init() without defining the ops, this would
return segmentation fault, as happened to me when implementing a charlcd
driver.  Checking the pointer before dereferencing protects from
segmentation fault.

Signed-off-by: Luiz Sampaio <sampaio.ime@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2021-11-24 11:46:52 +01:00

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