scsi: ufs: ufs-qcom: Restore TX Equalization settings on FOM failure

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ufs_qcom_get_rx_fom() applies temporary device TX Equalization values
before forcing HS mode and running the EOM-based SW FOM scan.

When one of these steps fails, the function can bypass the shared cleanup
path and leave temporary TX Equalization settings programmed.

Route those failures through the cleanup label so the original TX EQ
settings are restored and link recovery runs before exit.

This path also reuses ret for cleanup, so it may overwrite the original
error. Keep that on purpose: if cleanup succeeds, the caller can proceed
with the FOM result for the current iteration.

Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Ziqi Chen <ziqi.chen@oss.qualcomm.com>
Link: https://patch.msgid.link/20260625121306.1655467-2-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Can Guo 2026-06-25 05:13:03 -07:00 • committed by Martin K. Petersen

parent 760fc6f0e2

commit 890b10e76e

1 changed files with 4 additions and 5 deletions

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drivers/ufs/host/ufs-qcom.c

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