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USB storage: use dma_alloc where appropriate 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-06-21 10:24:43 +02:00
parent 787fa164dd
commit 9ca0e573af
1 changed files with 7 additions and 4 deletions
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11
drivers/usb/storage/transport.c
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@ -26,6 +26,7 @@
#include <clock.h>
#include <scsi.h>
#include <errno.h>
#include <dma.h>
#undef USB_STOR_DEBUG
@ -65,8 +66,8 @@ int usb_stor_Bulk_clear_endpt_stall(struct us_data *us, unsigned int pipe)
/* Determine what the maximum LUN supported is */
int usb_stor_Bulk_max_lun(struct us_data *us)
{
int len;
unsigned char iobuf[1];
int len, ret = 0;
unsigned char *iobuf = dma_alloc(1);
/* issue the command */
iobuf[0] = 0;
@ -81,7 +82,9 @@ int usb_stor_Bulk_max_lun(struct us_data *us)
/* if we have a successful request, return the result */
if (len > 0)
return (int)iobuf[0];
ret = iobuf[0];
dma_free(iobuf);
/*
* Some devices don't like GetMaxLUN. They may STALL the control
@ -90,7 +93,7 @@ int usb_stor_Bulk_max_lun(struct us_data *us)
* ways. In these cases the best approach is to use the default
* value: only one LUN.
*/
return 0;
return ret;
}
int usb_stor_Bulk_transport(ccb *srb, struct us_data *us)