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powerpc: floppy: Add missing checks after DMA map

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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
This commit is contained in:
Thomas Fourier 2025-06-20 09:55:55 +02:00 committed by Madhavan Srinivasan
parent f516479728
commit cf183c1730
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/include/asm/floppy.h
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@ -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;