diff options
| author |   Tom Yan <tom.ty89@gmail.com> | 2020-09-04 02:17:23 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-04 17:00:38 +0200 |
| commit | 0154012f8018bba4d9971d1007c12ffd48539ddb (patch) | |
| tree | 974d2f048b99c7f1e435abb25d99e455ffc5c9c2 | |
| parent | usb/host: ehci-npcm7xx: Use pm_ptr() macro (diff) | |
| download | linux-dev-0154012f8018bba4d9971d1007c12ffd48539ddb.tar.xz linux-dev-0154012f8018bba4d9971d1007c12ffd48539ddb.zip | |
usb-storage: fix sdev->host->dma_dev
Use scsi_add_host_with_dma() instead of scsi_add_host().
When the scsi request queue is initialized/allocated, hw_max_sectors is clamped
to the dma max mapping size. Therefore, the correct device that should be used
for the clamping needs to be set.
The same clamping is still needed in usb-storage as hw_max_sectors could be
changed there. The original clamping would be invalidated in such cases.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200903181725.2931-1-tom.ty89@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 2 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.c | 5 |
2 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index e5a971b83e3f..560efd1479ba 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -92,7 +92,7 @@ static int slave_alloc (struct scsi_device *sdev) static int slave_configure(struct scsi_device *sdev) { struct us_data *us = host_to_us(sdev->host); - struct device *dev = us->pusb_dev->bus->sysdev; + struct device *dev = sdev->host->dma_dev; /* * Many devices have trouble transferring more than 32KB at a time, diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 94a64729dc27..c2ef367cf257 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -1049,8 +1049,9 @@ int usb_stor_probe2(struct us_data *us) goto BadDevice; usb_autopm_get_interface_no_resume(us->pusb_intf); snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", - dev_name(&us->pusb_intf->dev)); - result = scsi_add_host(us_to_host(us), dev); + dev_name(dev)); + result = scsi_add_host_with_dma(us_to_host(us), dev, + us->pusb_dev->bus->sysdev); if (result) { dev_warn(dev, "Unable to add the scsi host\n"); |