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| author | Thomas Fourier <fourier.thomas@gmail.com> | 2025-06-20 09:55:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:28:23 +0200 |
| commit | 88517afa7401a088875f5f068aba0624ddb90aaf (patch) | |
| tree | 5160d2a635e17a4c5981cd1099b69fac8e23a192 /arch/powerpc | |
| parent | eb1e1526b82b8cf31f1ef9ca86a2647fb6cd89c6 (diff) | |
| download | linux-88517afa7401a088875f5f068aba0624ddb90aaf.tar.gz linux-88517afa7401a088875f5f068aba0624ddb90aaf.tar.bz2 linux-88517afa7401a088875f5f068aba0624ddb90aaf.zip | |
powerpc: floppy: Add missing checks after DMA map
[ Upstream commit cf183c1730f2634245da35e9b5d53381b787d112 ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/powerpc')
| -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; |