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[SCSI] usb storage: use scsi_eh API in REQUEST_SENSE execution 

- Use new scsi_eh_prep/restor_cmnd() for synchronous
    REQUEST_SENSE invocation.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Boaz Harrosh 2007-09-10 22:36:31 +03:00 committed by James Bottomley
parent e1c234685c
commit dff6de73f9
1 changed files with 4 additions and 42 deletions
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46
drivers/usb/storage/transport.c
View File

@ -50,7 +50,7 @@
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include "usb.h"
@ -580,25 +580,11 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
/* Now, if we need to do the auto-sense, let's do it */
if (need_auto_sense) {
int temp_result;
void* old_request_buffer;
unsigned short old_sg;
unsigned old_request_bufflen;
unsigned char old_sc_data_direction;
unsigned char old_cmd_len;
unsigned char old_cmnd[MAX_COMMAND_SIZE];
int old_resid;
struct scsi_eh_save ses;
US_DEBUGP("Issuing auto-REQUEST_SENSE\n");
/* save the old command */
memcpy(old_cmnd, srb->cmnd, MAX_COMMAND_SIZE);
old_cmd_len = srb->cmd_len;
/* set the command and the LUN */
memset(srb->cmnd, 0, MAX_COMMAND_SIZE);
srb->cmnd[0] = REQUEST_SENSE;
srb->cmnd[1] = old_cmnd[1] & 0xE0;
srb->cmnd[4] = 18;
scsi_eh_prep_cmnd(srb, &ses, NULL, 0, US_SENSE_SIZE);
/* FIXME: we must do the protocol translation here */
if (us->subclass == US_SC_RBC || us->subclass == US_SC_SCSI)
@ -606,36 +592,12 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
else
srb->cmd_len = 12;
/* set the transfer direction */
old_sc_data_direction = srb->sc_data_direction;
srb->sc_data_direction = DMA_FROM_DEVICE;
/* use the new buffer we have */
old_request_buffer = srb->request_buffer;
srb->request_buffer = us->sensebuf;
/* set the buffer length for transfer */
old_request_bufflen = srb->request_bufflen;
srb->request_bufflen = US_SENSE_SIZE;
/* set up for no scatter-gather use */
old_sg = srb->use_sg;
srb->use_sg = 0;
/* issue the auto-sense command */
old_resid = srb->resid;
srb->resid = 0;
temp_result = us->transport(us->srb, us);
/* let's clean up right away */
memcpy(srb->sense_buffer, us->sensebuf, US_SENSE_SIZE);
srb->resid = old_resid;
srb->request_buffer = old_request_buffer;
srb->request_bufflen = old_request_bufflen;
srb->use_sg = old_sg;
srb->sc_data_direction = old_sc_data_direction;
srb->cmd_len = old_cmd_len;
memcpy(srb->cmnd, old_cmnd, MAX_COMMAND_SIZE);
scsi_eh_restore_cmnd(srb, &ses);
if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) {
US_DEBUGP("-- auto-sense aborted\n");