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3023c050af
Depending on the architecture the transfer buffer may share a cacheline with the following mutex. As the buffer may be used for DMA, that is problematic. Use the high-level DMA helpers to make sure that cacheline sharing can not happen. Also drop the comment, as the helpers are documentation enough. https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org Fixes:4381a36abd("hwmon: add POWER-Z driver") Cc: stable@vger.kernel.org #ca085faabb: dma-mapping: add __dma_from_device_group_begin()/end() Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20260408-powerz-cacheline-alias-v1-1-1254891be0dd@weissschuh.net Signed-off-by: Guenter Roeck <linux@roeck-us.net>
283 lines
6.7 KiB
283 lines
6.7 KiB