[SRU][J:linux-xilinx-zynqmp][PATCH 0/1] Fix kernel error logs on sda

[Wei-Lin Chang]

BugLink: https://bugs.launchpad.net/bugs/2115853

SRU Justification

[Impact]

* Kernel error about sda found when booting into system (KD240 and KR260).
[ 8.743969] sd 0:0:0:0: [sda] No Caching mode page found
[ 8.749288] sd 0:0:0:0: [sda] Assuming drive cache: write through

ubuntu at kria:~$ sudo dmesg --level err
[ 2.102157] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 2.155641] ams ffa50000.ams: invalid resource
[ 6.416868] zynqmp-display fd4a0000.display: no PHY found
[ 7.357202] da9121 1-0032: Cannot read device ID: -6
[ 8.743969] sd 0:0:0:0: [sda] No Caching mode page found <------------ These two lines
[ 8.749288] sd 0:0:0:0: [sda] Assuming drive cache: write through <--- These two lines
[ 15.788622] systemd[1]: systemd-networkd.socket: Socket service systemd-networkd.service not loaded, refusing.
[ 15.798672] systemd[1]: Failed to listen on Network Service Netlink Socket.
[ 38.906044] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /fpga-full/firmware-name
[ 38.916341] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /fpga-full/resets

[Fix]

* Cherry-pick c4da1205752d from upstream.
For SD cardreaders it is extremely common not to have a cache.
Consequently, these error messages do not point to a real error.
Change KERN_ERR to KERN_WARNING.

[Test Plan]

* Checked error message is gone after applying the patch.

[Where problems could occur]

* Low potential for regression.

Martin Kepplinger (1):
  scsi: sd: Print write through due to no caching mode page as warning

 drivers/scsi/sd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

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2.43.0