diff mbox series

[v2,07/12] mmc: mmci: Use state machine state as exit condition

Message ID 20230405-pl180-busydetect-fix-v2-7-eeb10323b546@linaro.org
State New
Headers show
Series Fix busydetect on Ux500 PL180/MMCI | expand

Commit Message

Linus Walleij April 8, 2023, 10 p.m. UTC 
Return true if and only if we reached the state
MMCI_BUSY_DONE in the ux500 ->busy_complete() callback.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- No changes
---
 drivers/mmc/host/mmci.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 590703075bbc..2689c6bb62d6 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -673,7 +673,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 		       ~host->variant->busy_detect_mask, base + MMCIMASK0);
 		host->busy_state = MMCI_BUSY_DONE;
 		host->busy_status = 0;
-		return true;
+		goto out_ret_state;
 	}
 
 	/*
@@ -704,7 +704,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 				/* Keep accumulating status bits */
 				host->busy_status |= status & (MCI_CMDSENT | MCI_CMDRESPEND);
 				host->busy_state = MMCI_BUSY_WAITING_FOR_IRQS;
-				return false;
+				goto out_ret_state;
 			}
 			retries--;
 		}
@@ -713,8 +713,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 		writel(readl(base + MMCIMASK0) &
 		       ~host->variant->busy_detect_mask, base + MMCIMASK0);
 		host->busy_state = MMCI_BUSY_DONE;
-		host->busy_status = 0;
-		return true;
+		goto out_ret_state;
 	}
 
 	/*
@@ -733,7 +732,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 			host->busy_status |= status & (MCI_CMDSENT | MCI_CMDRESPEND);
 			writel(host->variant->busy_detect_mask, base + MMCICLEAR);
 			host->busy_state = MMCI_BUSY_START_IRQ;
-			return false;
+			goto out_ret_state;
 		} else {
 			dev_dbg(mmc_dev(host->mmc),
 				"lost busy status when waiting for busy start IRQ\n");
@@ -742,7 +741,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 			       ~host->variant->busy_detect_mask, base + MMCIMASK0);
 			host->busy_state = MMCI_BUSY_DONE;
 			host->busy_status = 0;
-			return true;
+			goto out_ret_state;
 		}
 	}
 
@@ -751,7 +750,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 			host->busy_status |= status & (MCI_CMDSENT | MCI_CMDRESPEND);
 			writel(host->variant->busy_detect_mask, base + MMCICLEAR);
 			host->busy_state = MMCI_BUSY_END_IRQ;
-			return false;
+			goto out_ret_state;
 		} else {
 			dev_dbg(mmc_dev(host->mmc),
 				"lost busy status when waiting for busy end IRQ\n");
@@ -760,7 +759,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 			       ~host->variant->busy_detect_mask, base + MMCIMASK0);
 			host->busy_state = MMCI_BUSY_DONE;
 			host->busy_status = 0;
-			return true;
+			goto out_ret_state;
 		}
 	}
 
@@ -774,7 +773,7 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 		if (status & host->variant->busy_detect_flag) {
 			/* We should just get two IRQs for busy detect */
 			dev_err(mmc_dev(host->mmc), "spurious busy detect IRQ\n");
-			return false;
+			goto out_ret_state;
 		}
 
 		writel(host->variant->busy_detect_mask, base + MMCICLEAR);
@@ -783,9 +782,13 @@  static bool ux500_busy_complete(struct mmci_host *host, u32 status, u32 err_msk)
 
 		host->busy_state = MMCI_BUSY_DONE;
 		host->busy_status = 0;
+	} else {
+		dev_dbg(mmc_dev(host->mmc), "fell through on state %d\n",
+			host->busy_state);
 	}
 
-	return true;
+out_ret_state:
+	return (host->busy_state == MMCI_BUSY_DONE);
 }
 
 /*