tree bdbe2adb9e124b365da3dafe971ebda52de9b0a6
parent 9b5387fe5af38116b452259d87cd66594b6277c1
author Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> 1651653728 +0530
committer Martin K. Petersen <martin.petersen@oracle.com> 1652233973 -0400

scsi: ufs: qcom: Fix acquiring the optional reset control line

On Qcom UFS platforms, the reset control line seems to be optional (for
SoCs like MSM8996 and probably for others too). The current logic tries to
mimic the devm_reset_control_get_optional() API but it also continues the
probe if there is an error with the declared reset line in DT/ACPI.

In an ideal case, if the reset line is not declared in DT/ACPI, the probe
should continue. But if there is problem in acquiring the declared reset
line (like EPROBE_DEFER) it should fail and return the appropriate error
code.

Link: https://lore.kernel.org/r/20220504084212.11605-2-manivannan.sadhasivam@linaro.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>