6.5-stable review patch. If anyone has any objections, please let me know.
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From: Kiwoong Kim kwmad.kim@samsung.com
[ Upstream commit 2d3f59cf868b4a2dd678a96cd49bdd91411bd59f ]
__ufshcd_send_uic_cmd() is wrapped by uic_cmd_mutex and its related contexts are accessed within the section wrapped by uic_cmd_mutex. Thus, wrapping with host_lock is redundant.
Signed-off-by: Kiwoong Kim kwmad.kim@samsung.com Link: https://lore.kernel.org/r/782ba5f26f0a96e58d85dff50751787d2d2a6b2b.169379006... Reviewed-by: Bart Van Assche bvanassche@acm.org Reviewed-by: Chanwoo Lee cw9316.lee@samsung.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ufs/core/ufshcd.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 9615a076735bd..75c6628af2c0e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -2416,7 +2416,6 @@ __ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd, bool completion) { lockdep_assert_held(&hba->uic_cmd_mutex); - lockdep_assert_held(hba->host->host_lock);
if (!ufshcd_ready_for_uic_cmd(hba)) { dev_err(hba->dev, @@ -2443,7 +2442,6 @@ __ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd, int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd) { int ret; - unsigned long flags;
if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD) return 0; @@ -2452,9 +2450,7 @@ int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd) mutex_lock(&hba->uic_cmd_mutex); ufshcd_add_delay_before_dme_cmd(hba);
- spin_lock_irqsave(hba->host->host_lock, flags); ret = __ufshcd_send_uic_cmd(hba, uic_cmd, true); - spin_unlock_irqrestore(hba->host->host_lock, flags); if (!ret) ret = ufshcd_wait_for_uic_cmd(hba, uic_cmd);
@@ -4166,8 +4162,8 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) wmb(); reenable_intr = true; } - ret = __ufshcd_send_uic_cmd(hba, cmd, false); spin_unlock_irqrestore(hba->host->host_lock, flags); + ret = __ufshcd_send_uic_cmd(hba, cmd, false); if (ret) { dev_err(hba->dev, "pwr ctrl cmd 0x%x with mode 0x%x uic error %d\n",