Le 20/06/2025 à 09:55, Thomas Fourier a écrit :
> [Vous ne recevez pas souvent de courriers de fourier.tho...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> The DMA map functions can fail and should be tested for errors.
>
> Signed-off-by: Thomas Fourier <fourier.tho...@gmail.com>
Reviewed-by: Christophe Leroy <christophe.le...@csgroup.eu>
> ---
> arch/powerpc/include/asm/floppy.h | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/floppy.h
> b/arch/powerpc/include/asm/floppy.h
> index f8ce178b43b7..34abf8bea2cc 100644
> --- a/arch/powerpc/include/asm/floppy.h
> +++ b/arch/powerpc/include/asm/floppy.h
> @@ -144,9 +144,12 @@ static int hard_dma_setup(char *addr, unsigned long
> size, int mode, int io)
> bus_addr = 0;
> }
>
> - if (!bus_addr) /* need to map it */
> + if (!bus_addr) { /* need to map it */
> bus_addr = dma_map_single(&isa_bridge_pcidev->dev, addr,
> size,
> dir);
> + if (dma_mapping_error(&isa_bridge_pcidev->dev, bus_addr))
> + return -ENOMEM;
> + }
>
> /* remember this one as prev */
> prev_addr = addr;
> --
> 2.43.0
>
