diff options
| author | Thomas Fourier <fourier.thomas@gmail.com> | 2025-06-20 09:55:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:36 +0200 |
| commit | 8f2d0a7d993dbec0f93baa4d723ad33f0c3ced5d (patch) | |
| tree | 9f8c6d20bb2f803f980e5907aee86da33b662889 | |
| parent | 7c3e99fd4a66a5ac9c7dd32db07359666efe0002 (diff) | |
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>
| -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; |