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scsi: ufs: core: Complain if UIC argument 2 is invalid

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According to the UFSHCI standard, the lowest byte of UIC argument 2 is
an output value. Additionally, ufshcd_uic_cmd_compl() is based on the
assumption that the lowest byte of UIC argument 2 is zero. Hence,
complain if the result byte is set when a UIC command is submitted.

Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260519212135.3130556-3-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2026-05-19 14:21:28 -07:00 committed by Martin K. Petersen
parent 727e78887e
commit 9fb4c79322
1 changed files with 1 additions and 0 deletions
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drivers/ufs/core/ufshcd.c
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@ -2571,6 +2571,7 @@ ufshcd_dispatch_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
lockdep_assert_held(&hba->uic_cmd_mutex);
WARN_ON(hba->active_uic_cmd);
WARN_ON_ONCE(uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT);
hba->active_uic_cmd = uic_cmd;