Loading drivers/scsi/ufs/ufshcd.c +19 −8 Original line number Diff line number Diff line Loading @@ -6166,19 +6166,30 @@ static irqreturn_t ufshcd_intr(int irq, void *__hba) u32 intr_status, enabled_intr_status; irqreturn_t retval = IRQ_NONE; struct ufs_hba *hba = __hba; int retries = hba->nutrs; spin_lock(hba->host->host_lock); intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS); /* * There could be max of hba->nutrs reqs in flight and in worst case * if the reqs get finished 1 by 1 after the interrupt status is * read, make sure we handle them by checking the interrupt status * again in a loop until we process all of the reqs before returning. */ do { enabled_intr_status = intr_status & ufshcd_readl(hba, REG_INTERRUPT_ENABLE); if (intr_status) ufshcd_writel(hba, intr_status, REG_INTERRUPT_STATUS); if (enabled_intr_status) { ufshcd_sl_intr(hba, enabled_intr_status); retval = IRQ_HANDLED; } intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS); } while (intr_status && --retries); spin_unlock(hba->host->host_lock); return retval; } Loading Loading
drivers/scsi/ufs/ufshcd.c +19 −8 Original line number Diff line number Diff line Loading @@ -6166,19 +6166,30 @@ static irqreturn_t ufshcd_intr(int irq, void *__hba) u32 intr_status, enabled_intr_status; irqreturn_t retval = IRQ_NONE; struct ufs_hba *hba = __hba; int retries = hba->nutrs; spin_lock(hba->host->host_lock); intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS); /* * There could be max of hba->nutrs reqs in flight and in worst case * if the reqs get finished 1 by 1 after the interrupt status is * read, make sure we handle them by checking the interrupt status * again in a loop until we process all of the reqs before returning. */ do { enabled_intr_status = intr_status & ufshcd_readl(hba, REG_INTERRUPT_ENABLE); if (intr_status) ufshcd_writel(hba, intr_status, REG_INTERRUPT_STATUS); if (enabled_intr_status) { ufshcd_sl_intr(hba, enabled_intr_status); retval = IRQ_HANDLED; } intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS); } while (intr_status && --retries); spin_unlock(hba->host->host_lock); return retval; } Loading