commit 0c3ef22a3aaf7293a89c111acaccc6e9d94c4680
author Simon Glass <sjg@chromium.org> Sat Jul 29 11:35:20 2017 -0600
committer Jaehoon Chung <jh80.chung@samsung.com> Thu Aug 17 16:44:17 2017 +0900
tree 32507efa44df2e98f3b04d403846de3f821ed016
parent 81357b53092e8d483116b04b38bb4789c1040747

dm: mmc: fsl_esdhc: Detect init failure

Since esdhc_init_common() can fail it should return an error code. Update
this and also adjust the timeout mechanism to use get_timer(), which is a
more common approach.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/mmc/fsl_esdhc.c

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 1e1e92d..abb1f1e 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -621,14 +621,17 @@
 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
 {
 	struct fsl_esdhc *regs = priv->esdhc_regs;
-	int timeout = 1000;
+	ulong start;
 
 	/* Reset the entire host controller */
 	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA);
 
 	/* Wait until the controller is available */
-	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA) && --timeout)
-		udelay(1000);
+	start = get_timer(0);
+	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA)) {
+		if (get_timer(start) > 1000)
+			return -ETIMEDOUT;
+	}
 
 #if defined(CONFIG_FSL_USDHC)
 	/* RSTA doesn't reset MMC_BOOT register, so manually reset it */