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ac6f0825e5
Instead of risking alignment problems and causing (false positive) array
bound warnings when casting a u32 to (64-bit) unsigned long, just use a
native unsigned long for doing bit searches. Avoids warning with GCC 15's
-Warray-bounds -fdiagnostics-details:
In file included from ../include/linux/bitmap.h:11,
from ../include/linux/cpumask.h:12,
from ../arch/x86/include/asm/paravirt.h:21,
from ../arch/x86/include/asm/irqflags.h:80,
from ../include/linux/irqflags.h:18,
from ../include/linux/spinlock.h:59,
from ../include/linux/irq.h:14,
from ../include/linux/irqchip/chained_irq.h:10,
from ../include/linux/gpio/driver.h:8,
from ../drivers/pinctrl/mediatek/pinctrl-airoha.c:11:
In function 'find_next_bit',
inlined from 'airoha_irq_handler' at ../drivers/pinctrl/mediatek/pinctrl-airoha.c:2394:3:
../include/linux/find.h:65:23: error: array subscript 'long unsigned int[0]' is partly outside array bounds of 'u32[1]' {aka 'unsigned int[1]'} [-Werror=array-bounds=]
65 | val = *addr & GENMASK(size - 1, offset);
| ^~~~~
../drivers/pinctrl/mediatek/pinctrl-airoha.c: In function 'airoha_irq_handler':
../drivers/pinctrl/mediatek/pinctrl-airoha.c:2387:21: note: object 'status' of size 4
2387 | u32 status;
| ^~~~~~
Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/20241117114534.work.292-kees@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Linux kernel
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