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scsi: ufs: add descriptor read support

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Allow reading descriptors with length which is different
than the descriptors max size.

Change-Id: Ia0685ae147883f33466865d2348d71473e0d5173
Signed-off-by: Raviv Shvili <rshvili@codeaurora.org>
This commit is contained in:
Raviv Shvili 2014-03-20 21:33:04 +02:00 • committed by David Keitel
parent facadbc754
commit a7da3b2959
1 changed files with 2 additions and 4 deletions
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6
drivers/scsi/ufs/ufshcd.c
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@ -2085,10 +2085,8 @@ static int ufshcd_read_desc_param(struct ufs_hba *hba,
desc_id, desc_index, 0, desc_buf,
&buff_len);
if (ret || (buff_len < ufs_query_desc_max_size[desc_id]) ||
(desc_buf[QUERY_DESC_LENGTH_OFFSET] !=
ufs_query_desc_max_size[desc_id])
|| (desc_buf[QUERY_DESC_DESC_TYPE_OFFSET] != desc_id)) {
if (ret || (buff_len != desc_buf[QUERY_DESC_LENGTH_OFFSET]) ||
(desc_buf[QUERY_DESC_DESC_TYPE_OFFSET] != desc_id)) {
dev_err(hba->dev, "%s: Failed reading descriptor. desc_id %d, param_offset %d, buff_len %d ,index %d, ret %d",
__func__, desc_id, param_offset, buff_len,
desc_index, ret);