scsi: ufs: Invert the return value of ufshcd_is_hba_active()

It is confusing that ufshcd_is_hba_active() returns 'true' if the HBA is
not active. Clear up this confusion by inverting the return value of
ufshcd_is_hba_active(). This patch does not change any functionality.

Link: https://lore.kernel.org/r/20220419225811.4127248-12-bvanassche@acm.org
Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e2d93f9..e27d62e 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -917,12 +917,11 @@ static inline void ufshcd_hba_start(struct ufs_hba *hba)
  * ufshcd_is_hba_active - Get controller state
  * @hba: per adapter instance
  *
- * Returns false if controller is active, true otherwise
+ * Returns true if and only if the controller is active.
  */
 static inline bool ufshcd_is_hba_active(struct ufs_hba *hba)
 {
-       return (ufshcd_readl(hba, REG_CONTROLLER_ENABLE) & CONTROLLER_ENABLE)
-               ? false : true;
+       return ufshcd_readl(hba, REG_CONTROLLER_ENABLE) & CONTROLLER_ENABLE;
 }
 
 u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba)
@@ -4552,7 +4551,7 @@ static int ufshcd_hba_execute_hce(struct ufs_hba *hba)
        int retry_inner;
 
 start:
-       if (!ufshcd_is_hba_active(hba))
+       if (ufshcd_is_hba_active(hba))
                /* change controller state to "reset state" */
                ufshcd_hba_stop(hba);
 
@@ -4578,7 +4577,7 @@ start:
 
        /* wait for the host controller to complete initialization */
        retry_inner = 50;
-       while (ufshcd_is_hba_active(hba)) {
+       while (!ufshcd_is_hba_active(hba)) {
                if (retry_inner) {
                        retry_inner--;
                } else {