s390/pci_dma: improve debugging of errors during dma map
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Mon, 26 Oct 2015 10:20:44 +0000 (11:20 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 9 Nov 2015 08:10:49 +0000 (09:10 +0100)
commit52d43d8184b1840c7cf6136724223585f51a1074
tree35b734de0905dc0849a4d65daa5fd450ed3c1fb2
parent66728eeea6d80060e4b9df55c7845c838ff2799f
s390/pci_dma: improve debugging of errors during dma map

Improve debugging to find out what went wrong during a failed
dma map/unmap operation.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/pci/pci_dma.c