From: Hannes Reinecke <hare@suse.de>
Date: Fri, 24 Oct 2014 12:26:51 +0000 (+0200)
Subject: scsi: do not decode sense extras
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=15c75f8a6d570e1d22594fe7f1cdb45360651a60;p=openwrt%2Fstaging%2Fblogic.git

scsi: do not decode sense extras

Currently we're only decoding sense extras for tape devices.
And even there only for fixed format sense formats.
As this is of rather limited use in the general case we should
be stop trying to decode sense extras; the tape driver does
its own decoding anyway.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index d7b6e4bfa55c..94c0642e2874 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -1453,67 +1453,6 @@ scsi_dump_sense_buffer(const unsigned char *sense_buffer, int sense_len)
 	return;
 }
 
-static void
-scsi_decode_sense_extras(const unsigned char *sense_buffer, int sense_len,
-			 struct scsi_sense_hdr *sshdr)
-{
-	int k, num, res;
-
-	if (sshdr->response_code < 0x72)
-	{
-		/* only decode extras for "fixed" format now */
-		char buff[80];
-		int blen, fixed_valid;
-		unsigned int info;
-
-		fixed_valid = sense_buffer[0] & 0x80;
-		info = ((sense_buffer[3] << 24) | (sense_buffer[4] << 16) |
-			(sense_buffer[5] << 8) | sense_buffer[6]);
-		res = 0;
-		memset(buff, 0, sizeof(buff));
-		blen = sizeof(buff) - 1;
-		if (fixed_valid)
-			res += snprintf(buff + res, blen - res,
-					"Info fld=0x%x", info);
-		if (sense_buffer[2] & 0x80) {
-			/* current command has read a filemark */
-			if (res > 0)
-				res += snprintf(buff + res, blen - res, ", ");
-			res += snprintf(buff + res, blen - res, "FMK");
-		}
-		if (sense_buffer[2] & 0x40) {
-			/* end-of-medium condition exists */
-			if (res > 0)
-				res += snprintf(buff + res, blen - res, ", ");
-			res += snprintf(buff + res, blen - res, "EOM");
-		}
-		if (sense_buffer[2] & 0x20) {
-			/* incorrect block length requested */
-			if (res > 0)
-				res += snprintf(buff + res, blen - res, ", ");
-			res += snprintf(buff + res, blen - res, "ILI");
-		}
-		if (res > 0)
-			printk("%s\n", buff);
-	} else if (sshdr->additional_length > 0) {
-		/* descriptor format with sense descriptors */
-		num = 8 + sshdr->additional_length;
-		num = (sense_len < num) ? sense_len : num;
-		printk("Descriptor sense data with sense descriptors "
-		       "(in hex):");
-		for (k = 0; k < num; ++k) {
-			if (0 == (k % 16)) {
-				printk("\n");
-				printk(KERN_INFO "        ");
-			}
-			printk("%02x ", sense_buffer[k]);
-		}
-
-		printk("\n");
-	}
-
-}
-
 /* Normalize and print sense buffer with name prefix */
 void __scsi_print_sense(const struct scsi_device *sdev, const char *name,
 			const unsigned char *sense_buffer, int sense_len)
@@ -1525,7 +1464,6 @@ void __scsi_print_sense(const struct scsi_device *sdev, const char *name,
 		return;
 	}
 	scsi_show_sense_hdr(sdev, name, &sshdr);
-	scsi_decode_sense_extras(sense_buffer, sense_len, &sshdr);
 	scsi_show_extd_sense(sdev, name, sshdr.asc, sshdr.ascq);
 }
 EXPORT_SYMBOL(__scsi_print_sense);