Commit cf183c17 authored by Thomas Fourier's avatar Thomas Fourier Committed by Madhavan Srinivasan
Browse files

powerpc: floppy: Add missing checks after DMA map 



The DMA map functions can fail and should be tested for errors.

Signed-off-by: default avatarThomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMadhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250620075602.12575-1-fourier.thomas@gmail.com
parent f5164797

arch/powerpc/include/asm/floppy.h

+4 −1
Original line number Diff line number Diff line
@@ -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;