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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-08 16:58:08 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-08 16:58:08 +0000 |
| commit | 1121cef62750fbc3ec1b87f4fcf2cef0f05f23a9 (patch) | |
| tree | ba8548f2df113c7da8a46563947536f455f9a1c0 /drivers/scsi/sd.c | |
| parent | Adding debian version 6.1.76-1. (diff) | |
| download | linux-1121cef62750fbc3ec1b87f4fcf2cef0f05f23a9.tar.xz linux-1121cef62750fbc3ec1b87f4fcf2cef0f05f23a9.zip | |
Merging upstream version 6.1.82.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/sd.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 31b5273f4..4433b02c8 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3284,6 +3284,24 @@ static bool sd_validate_opt_xfer_size(struct scsi_disk *sdkp, return true; } +static void sd_read_block_zero(struct scsi_disk *sdkp) +{ + unsigned int buf_len = sdkp->device->sector_size; + char *buffer, cmd[10] = { }; + + buffer = kmalloc(buf_len, GFP_KERNEL); + if (!buffer) + return; + + cmd[0] = READ_10; + put_unaligned_be32(0, &cmd[2]); /* Logical block address 0 */ + put_unaligned_be16(1, &cmd[7]); /* Transfer 1 logical block */ + + scsi_execute_cmd(sdkp->device, cmd, REQ_OP_DRV_IN, buffer, buf_len, + SD_TIMEOUT, sdkp->max_retries, NULL); + kfree(buffer); +} + /** * sd_revalidate_disk - called the first time a new disk is seen, * performs disk spin up, read_capacity, etc. @@ -3323,7 +3341,13 @@ static int sd_revalidate_disk(struct gendisk *disk) */ if (sdkp->media_present) { sd_read_capacity(sdkp, buffer); - + /* + * Some USB/UAS devices return generic values for mode pages + * until the media has been accessed. Trigger a READ operation + * to force the device to populate mode pages. + */ + if (sdp->read_before_ms) + sd_read_block_zero(sdkp); /* * set the default to rotational. All non-rotational devices * support the block characteristics VPD page, which will |