[SCSI] convert the remaining mid-layer pieces to scsi_execute_req
After this, we just have some drivers, all the ULDs and the SPI
transport class using scsi_wait_req().
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 278e0c9..3f3accd 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1615,7 +1615,7 @@
/**
* __scsi_mode_sense - issue a mode sense, falling back from 10 to
* six bytes if necessary.
- * @sreq: SCSI request to fill in with the MODE_SENSE
+ * @sdev: SCSI device to be queried
* @dbd: set if mode sense will allow block descriptors to be returned
* @modepage: mode page being requested
* @buffer: request buffer (may not be smaller than eight bytes)
@@ -1623,26 +1623,38 @@
* @timeout: command timeout
* @retries: number of retries before failing
* @data: returns a structure abstracting the mode header data
+ * @sense: place to put sense data (or NULL if no sense to be collected).
+ * must be SCSI_SENSE_BUFFERSIZE big.
*
* Returns zero if unsuccessful, or the header offset (either 4
* or 8 depending on whether a six or ten byte command was
* issued) if successful.
**/
int
-__scsi_mode_sense(struct scsi_request *sreq, int dbd, int modepage,
+scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
unsigned char *buffer, int len, int timeout, int retries,
- struct scsi_mode_data *data) {
+ struct scsi_mode_data *data, char *sense) {
unsigned char cmd[12];
int use_10_for_ms;
int header_length;
+ int result;
+ char *sense_buffer = NULL;
memset(data, 0, sizeof(*data));
memset(&cmd[0], 0, 12);
cmd[1] = dbd & 0x18; /* allows DBD and LLBA bits */
cmd[2] = modepage;
+ if (!sense) {
+ sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
+ if (!sense_buffer) {
+ dev_printk(KERN_ERR, &sdev->sdev_gendev, "failed to allocate sense buffer\n");
+ return 0;
+ }
+ sense = sense_buffer;
+ }
retry:
- use_10_for_ms = sreq->sr_device->use_10_for_ms;
+ use_10_for_ms = sdev->use_10_for_ms;
if (use_10_for_ms) {
if (len < 8)
@@ -1660,36 +1672,35 @@
header_length = 4;
}
- sreq->sr_cmd_len = 0;
- memset(sreq->sr_sense_buffer, 0, sizeof(sreq->sr_sense_buffer));
- sreq->sr_data_direction = DMA_FROM_DEVICE;
+ memset(sense, 0, SCSI_SENSE_BUFFERSIZE);
memset(buffer, 0, len);
- scsi_wait_req(sreq, cmd, buffer, len, timeout, retries);
+ result = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buffer, len,
+ sense, timeout, retries);
/* This code looks awful: what it's doing is making sure an
* ILLEGAL REQUEST sense return identifies the actual command
* byte as the problem. MODE_SENSE commands can return
* ILLEGAL REQUEST if the code page isn't supported */
- if (use_10_for_ms && !scsi_status_is_good(sreq->sr_result) &&
- (driver_byte(sreq->sr_result) & DRIVER_SENSE)) {
+ if (use_10_for_ms && !scsi_status_is_good(result) &&
+ (driver_byte(result) & DRIVER_SENSE)) {
struct scsi_sense_hdr sshdr;
- if (scsi_request_normalize_sense(sreq, &sshdr)) {
+ if (scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr)) {
if ((sshdr.sense_key == ILLEGAL_REQUEST) &&
(sshdr.asc == 0x20) && (sshdr.ascq == 0)) {
/*
* Invalid command operation code
*/
- sreq->sr_device->use_10_for_ms = 0;
+ sdev->use_10_for_ms = 0;
goto retry;
}
}
}
- if(scsi_status_is_good(sreq->sr_result)) {
+ if(scsi_status_is_good(result)) {
data->header_length = header_length;
if(use_10_for_ms) {
data->length = buffer[0]*256 + buffer[1] + 2;
@@ -1706,73 +1717,34 @@
}
}
- return sreq->sr_result;
-}
-EXPORT_SYMBOL(__scsi_mode_sense);
-
-/**
- * scsi_mode_sense - issue a mode sense, falling back from 10 to
- * six bytes if necessary.
- * @sdev: scsi device to send command to.
- * @dbd: set if mode sense will disable block descriptors in the return
- * @modepage: mode page being requested
- * @buffer: request buffer (may not be smaller than eight bytes)
- * @len: length of request buffer.
- * @timeout: command timeout
- * @retries: number of retries before failing
- *
- * Returns zero if unsuccessful, or the header offset (either 4
- * or 8 depending on whether a six or ten byte command was
- * issued) if successful.
- **/
-int
-scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
- unsigned char *buffer, int len, int timeout, int retries,
- struct scsi_mode_data *data)
-{
- struct scsi_request *sreq = scsi_allocate_request(sdev, GFP_KERNEL);
- int ret;
-
- if (!sreq)
- return -1;
-
- ret = __scsi_mode_sense(sreq, dbd, modepage, buffer, len,
- timeout, retries, data);
-
- scsi_release_request(sreq);
-
- return ret;
+ kfree(sense_buffer);
+ return result;
}
EXPORT_SYMBOL(scsi_mode_sense);
int
scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries)
{
- struct scsi_request *sreq;
char cmd[] = {
TEST_UNIT_READY, 0, 0, 0, 0, 0,
};
+ char sense[SCSI_SENSE_BUFFERSIZE];
int result;
- sreq = scsi_allocate_request(sdev, GFP_KERNEL);
- if (!sreq)
- return -ENOMEM;
+ result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, sense,
+ timeout, retries);
- sreq->sr_data_direction = DMA_NONE;
- scsi_wait_req(sreq, cmd, NULL, 0, timeout, retries);
-
- if ((driver_byte(sreq->sr_result) & DRIVER_SENSE) && sdev->removable) {
+ if ((driver_byte(result) & DRIVER_SENSE) && sdev->removable) {
struct scsi_sense_hdr sshdr;
- if ((scsi_request_normalize_sense(sreq, &sshdr)) &&
+ if ((scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE,
+ &sshdr)) &&
((sshdr.sense_key == UNIT_ATTENTION) ||
(sshdr.sense_key == NOT_READY))) {
sdev->changed = 1;
- sreq->sr_result = 0;
+ result = 0;
}
}
- result = sreq->sr_result;
- scsi_release_request(sreq);
return result;
}
EXPORT_SYMBOL(scsi_test_unit_ready);
