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scsi: sd: Print write through due to no caching mode page as warning

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For SD cardreaders it is extremely common not to have a cache.
Consequently, the following messages do not point to a real error one could
try to fix but rather describe how the disk works:

  sd 0:0:0:0: [sda] No Caching mode page found
  sd 0:0:0:0: [sda] Assuming drive cache: write through

Print these messages as warnings instead of errors.

Link: https://lore.kernel.org/r/20211013075050.3870354-1-martin.kepplinger@puri.sm
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Martin Kepplinger 2021-10-13 09:50:50 +02:00 committed by Martin K. Petersen
parent a47c6b713e
commit c4da120575
1 changed files with 3 additions and 2 deletions
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5
drivers/scsi/sd.c
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@ -2792,7 +2792,8 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
} }
} }
sd_first_printk(KERN_ERR, sdkp, "No Caching mode page found\n"); sd_first_printk(KERN_WARNING, sdkp,
"No Caching mode page found\n");
goto defaults; goto defaults;
Page_found: Page_found:
@ -2847,7 +2848,7 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
"Assuming drive cache: write back\n"); "Assuming drive cache: write back\n");
sdkp->WCE = 1; sdkp->WCE = 1;
} else { } else {
sd_first_printk(KERN_ERR, sdkp, sd_first_printk(KERN_WARNING, sdkp,
"Assuming drive cache: write through\n"); "Assuming drive cache: write through\n");
sdkp->WCE = 0; sdkp->WCE = 0;
} }