• Albrecht Dreß's avatar
    [PATCH] ARM: 2694/1: [s3c2410/dma] release irq properly to fix kernel oops · 105bb269
    Albrecht Dreß authored
    Patch from Albrecht Dre
    
    Problem:
    When a module requests a DMA channel via the function s3c2410_dma_request(), this function requests the appropriate irq under the name of the client module. When the client module is unloaded, it calls s3c2410_dma_free() which does not free the irq. Consequently, when e.g. running "cat /proc/interrupts", the irq owner points to freed memory, leading to a kernel oops.
    File:
    linux/arch/arm/mach-s3c2410/dma.c
    Fix:
    trivial, below
    
    Signed-off-by: Albrecht Dre
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
    105bb269
dma.c 27.3 KB