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| author |   Thomas Fourier <fourier.thomas@gmail.com> | 2025-06-20 09:55:55 +0200 |
|---|---|---|
| committer |   Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-06-23 10:02:52 +0530 |
| commit | cf183c1730f2634245da35e9b5d53381b787d112 (patch) | |
| tree | ba2ec6ab33ef957ca8c67006b1d80349c08eee99 | |
| parent | book3s64/radix : Optimize vmemmap start alignment (diff) | |
| download | wireguard-linux-cf183c1730f2634245da35e9b5d53381b787d112.tar.xz wireguard-linux-cf183c1730f2634245da35e9b5d53381b787d112.zip | |
powerpc: floppy: Add missing checks after DMA map
The DMA map functions can fail and should be tested for errors.
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250620075602.12575-1-fourier.thomas@gmail.com
| -rw-r--r-- | arch/powerpc/include/asm/floppy.h | 5 |
1 files changed, 4 insertions, 1 deletions
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; |