This is a note to let you know that I've just added the patch titled scsi: ufshcd: release resources if probe fails to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-ufshcd-release-resources-if-probe-fails.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From afa3dfd42d205b106787476647735aa1de1a5d02 Mon Sep 17 00:00:00 2001 From: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx> Date: Thu, 27 Oct 2016 17:25:58 -0700 Subject: scsi: ufshcd: release resources if probe fails From: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx> commit afa3dfd42d205b106787476647735aa1de1a5d02 upstream. If ufshcd pltfrm/pci driver's probe fails for some reason then ensure that scsi host is released to avoid memory leak but managed memory allocations (via devm_* calls) need not to be freed explicitly on probe failure as memory allocated with these functions is automatically freed on driver detach. Reviewed-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx> Signed-off-by: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/scsi/ufs/ufshcd-pci.c | 2 ++ drivers/scsi/ufs/ufshcd-pltfrm.c | 5 +---- drivers/scsi/ufs/ufshcd.c | 3 --- 3 files changed, 3 insertions(+), 7 deletions(-) --- a/drivers/scsi/ufs/ufshcd-pci.c +++ b/drivers/scsi/ufs/ufshcd-pci.c @@ -104,6 +104,7 @@ static void ufshcd_pci_remove(struct pci pm_runtime_forbid(&pdev->dev); pm_runtime_get_noresume(&pdev->dev); ufshcd_remove(hba); + ufshcd_dealloc_host(hba); } /** @@ -147,6 +148,7 @@ ufshcd_pci_probe(struct pci_dev *pdev, c err = ufshcd_init(hba, mmio_base, pdev->irq); if (err) { dev_err(&pdev->dev, "Initialization failed\n"); + ufshcd_dealloc_host(hba); return err; } --- a/drivers/scsi/ufs/ufshcd-pltfrm.c +++ b/drivers/scsi/ufs/ufshcd-pltfrm.c @@ -163,7 +163,7 @@ static int ufshcd_populate_vreg(struct d if (ret) { dev_err(dev, "%s: unable to find %s err %d\n", __func__, prop_name, ret); - goto out_free; + goto out; } vreg->min_uA = 0; @@ -185,9 +185,6 @@ static int ufshcd_populate_vreg(struct d goto out; -out_free: - devm_kfree(dev, vreg); - vreg = NULL; out: if (!ret) *out_vreg = vreg; --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6507,8 +6507,6 @@ void ufshcd_remove(struct ufs_hba *hba) ufshcd_disable_intr(hba, hba->intr_mask); ufshcd_hba_stop(hba, true); - scsi_host_put(hba->host); - ufshcd_exit_clk_gating(hba); if (ufshcd_is_clkscaling_enabled(hba)) devfreq_remove_device(hba->devfreq); @@ -6876,7 +6874,6 @@ exit_gating: ufshcd_exit_clk_gating(hba); out_disable: hba->is_irq_enabled = false; - scsi_host_put(host); ufshcd_hba_exit(hba); out_error: return err; Patches currently in stable-queue which might be from subhashj@xxxxxxxxxxxxxx are queue-4.9/scsi-ufs-fix-race-between-clock-gating-and-devfreq-scaling-work.patch queue-4.9/scsi-ufshcd-fix-race-between-clk-scaling-and-ungate-work.patch queue-4.9/scsi-ufshcd-release-resources-if-probe-fails.patch queue-4.9/scsi-ufs-fix-bugs-related-to-null-pointer-access-and-array-size.patch