From: Vignesh Raghavendra vigneshr@ti.com
[ Upstream commit 22617e21633142dd2b81541cb3b95d6fb59aa85f ]
Fix unwinding of pm_runtime changes when bailing out of driver probe due to a failure and also on removal of driver.
Link: https://lore.kernel.org/r/20200526100340.15032-1-vigneshr@ti.com Fixes: 6979e56cec97 ("scsi: ufs: Add driver for TI wrapper for Cadence UFS IP") Reported-by: Dinghao Liu dinghao.liu@zju.edu.cn Signed-off-by: Vignesh Raghavendra vigneshr@ti.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/ufs/ti-j721e-ufs.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/ufs/ti-j721e-ufs.c b/drivers/scsi/ufs/ti-j721e-ufs.c index 5216d228cdd9..46bb905b4d6a 100644 --- a/drivers/scsi/ufs/ti-j721e-ufs.c +++ b/drivers/scsi/ufs/ti-j721e-ufs.c @@ -32,14 +32,14 @@ static int ti_j721e_ufs_probe(struct platform_device *pdev) ret = pm_runtime_get_sync(dev); if (ret < 0) { pm_runtime_put_noidle(dev); - return ret; + goto disable_pm; }
/* Select MPHY refclk frequency */ clk = devm_clk_get(dev, NULL); if (IS_ERR(clk)) { dev_err(dev, "Cannot claim MPHY clock.\n"); - return PTR_ERR(clk); + goto clk_err; } clk_rate = clk_get_rate(clk); if (clk_rate == 26000000) @@ -54,16 +54,23 @@ static int ti_j721e_ufs_probe(struct platform_device *pdev) dev); if (ret) { dev_err(dev, "failed to populate child nodes %d\n", ret); - pm_runtime_put_sync(dev); + goto clk_err; }
return ret; + +clk_err: + pm_runtime_put_sync(dev); +disable_pm: + pm_runtime_disable(dev); + return ret; }
static int ti_j721e_ufs_remove(struct platform_device *pdev) { of_platform_depopulate(&pdev->dev); pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev);
return 0; }