diff options
| -rw-r--r-- | drivers/ufs/core/ufshcd.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 54082af7f65e..fa1fdba37267 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -371,10 +371,11 @@ EXPORT_SYMBOL_GPL(ufshcd_disable_irq); */ static void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs) { - u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE); + u32 old_val = ufshcd_readl(hba, REG_INTERRUPT_ENABLE); + u32 new_val = old_val | intrs; - set |= intrs; - ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE); + if (new_val != old_val) + ufshcd_writel(hba, new_val, REG_INTERRUPT_ENABLE); } /** @@ -384,10 +385,11 @@ static void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs) */ static void ufshcd_disable_intr(struct ufs_hba *hba, u32 intrs) { - u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE); + u32 old_val = ufshcd_readl(hba, REG_INTERRUPT_ENABLE); + u32 new_val = old_val & ~intrs; - set &= ~intrs; - ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE); + if (new_val != old_val) + ufshcd_writel(hba, new_val, REG_INTERRUPT_ENABLE); } static void ufshcd_configure_wb(struct ufs_hba *hba) |