]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
scsi: smartpqi: properly set both the DMA mask and the coherent DMA mask
authorLianbo Jiang <lijiang@redhat.com>
Mon, 27 May 2019 00:59:34 +0000 (08:59 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 22 Jun 2019 06:15:21 +0000 (08:15 +0200)
commitcb7c6c33d3bbb75337058befd26cb0459460b2c5
tree7c59540227052920666033761081005fddd27e13
parent214c5933ffcf703112656f5e3d98505fbfb97cb3
scsi: smartpqi: properly set both the DMA mask and the coherent DMA mask

[ Upstream commit 1d94f06e7f5df4064ef336b7b710f50143b64a53 ]

When SME is enabled, the smartpqi driver won't work on the HP DL385 G10
machine, which causes the failure of kernel boot because it fails to
allocate pqi error buffer. Please refer to the kernel log:
....
[    9.431749] usbcore: registered new interface driver uas
[    9.441524] Microsemi PQI Driver (v1.1.4-130)
[    9.442956] i40e 0000:04:00.0: fw 6.70.48768 api 1.7 nvm 10.2.5
[    9.447237] smartpqi 0000:23:00.0: Microsemi Smart Family Controller found
         Starting dracut initqueue hook...
[  OK  ] Started Show Plymouth Boot Scre[    9.471654] Broadcom NetXtreme-C/E driver bnxt_en v1.9.1
en.
[  OK  ] Started Forward Password Requests to Plymouth Directory Watch.
[[0;[    9.487108] smartpqi 0000:23:00.0: failed to allocate PQI error buffer
....
[  139.050544] dracut-initqueue[949]: Warning: dracut-initqueue timeout - starting timeout scripts
[  139.589779] dracut-initqueue[949]: Warning: dracut-initqueue timeout - starting timeout scripts

Basically, the fact that the coherent DMA mask value wasn't set caused the
driver to fall back to SWIOTLB when SME is active.

For correct operation, lets call the dma_set_mask_and_coherent() to
properly set the mask for both streaming and coherent, in order to inform
the kernel about the devices DMA addressing capabilities.

Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Tested-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/scsi/smartpqi/smartpqi_init.c