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libata: fixup oops in ata_eh_link_report()

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We should only try to evaluate the cdb if this is an ATAPI
device, for any other device the 'cdb' field and the cdb_len
has no meaning.

Fixes: cbba5b0ee4
Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Hannes Reinecke 2015-01-19 16:55:38 +01:00 committed by Christoph Hellwig
parent a63bb9ba84
commit a13b0c9d09
1 changed files with 3 additions and 2 deletions
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5
drivers/ata/libata-eh.c
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@ -2481,8 +2481,6 @@ static void ata_eh_link_report(struct ata_link *link)
for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
struct ata_taskfile *cmd = &qc->tf, *res = &qc->result_tf;
const u8 *cdb = qc->cdb;
size_t cdb_len = qc->dev->cdb_len;
char data_buf[20] = "";
char cdb_buf[70] = "";
@ -2510,6 +2508,9 @@ static void ata_eh_link_report(struct ata_link *link)
}
if (ata_is_atapi(qc->tf.protocol)) {
const u8 *cdb = qc->cdb;
size_t cdb_len = qc->dev->cdb_len;
if (qc->scsicmd) {
cdb = qc->scsicmd->cmnd;
cdb_len = qc->scsicmd->cmd_len;