diff options
| author | Venkat Gopalakrishnan | 2017-02-04 01:58:24 +0100 |
|---|---|---|
| committer | Martin K. Petersen | 2017-02-08 00:04:12 +0100 |
| commit | 7942f7b568d7cda28c3aea9c81d48490769c853c (patch) | |
| tree | 438bf79a2eb545223c3dbbf7fca60ef9c5ae9378 | |
| parent | scsi: ufs-qcom: dump additional testbus registers (diff) | |
| download | kernel-qcow2-linux-7942f7b568d7cda28c3aea9c81d48490769c853c.tar.gz kernel-qcow2-linux-7942f7b568d7cda28c3aea9c81d48490769c853c.tar.xz kernel-qcow2-linux-7942f7b568d7cda28c3aea9c81d48490769c853c.zip | |
scsi: ufs: dump hw regs on link failures
Dump host state, power info and host/vendor specific registers
on link failures. This provides useful info to debug the failures.
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a99a673db71e..8b721f431dd0 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3554,6 +3554,12 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) ret = (status != PWR_OK) ? status : -1; } out: + if (ret) { + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } + spin_lock_irqsave(hba->host->host_lock, flags); hba->active_uic_cmd = NULL; hba->uic_async_done = NULL; @@ -4146,8 +4152,12 @@ link_startup: ret = ufshcd_make_hba_operational(hba); out: - if (ret) + if (ret) { dev_err(hba->dev, "link startup failed %d\n", ret); + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } return ret; } |