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Revert "libata-eh: Set 'information' field for autosense"

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This reverts commit a1524f226a.

As implemented, ACS-4 sense reporting for ATA devices bypasses error
diagnosis and handling in libata degrading EH behavior significantly.
Revert the related changes for now.

Signed-off-by: Tejun Heo <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: [email protected] #v4.1+
This commit is contained in:
Tejun Heo 2015-08-03 11:41:33 -04:00
commit fe16d4f202
6 changed files with 3 additions and 53 deletions
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31
drivers/scsi/scsi_error.c
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@ -26,7 +26,6 @@
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@ -2523,33 +2522,3 @@ void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)
}
}
EXPORT_SYMBOL(scsi_build_sense_buffer);
/**
* scsi_set_sense_information - set the information field in a
* formatted sense data buffer
* @buf: Where to build sense data
* @info: 64-bit information value to be set
*
**/
void scsi_set_sense_information(u8 *buf, u64 info)
{
if ((buf[0] & 0x7f) == 0x72) {
u8 *ucp, len;
len = buf[7];
ucp = (char *)scsi_sense_desc_find(buf, len + 8, 0);
if (!ucp) {
buf[7] = len + 0xa;
ucp = buf + 8 + len;
}
ucp[0] = 0;
ucp[1] = 0xa;
ucp[2] = 0x80; /* Valid bit */
ucp[3] = 0;
put_unaligned_be64(info, &ucp[4]);
} else if ((buf[0] & 0x7f) == 0x70) {
buf[0] |= 0x80;
put_unaligned_be64(info, &buf[3]);
}
}
EXPORT_SYMBOL(scsi_set_sense_information);