From: San Mehat <san@android.com>
Date: Mon, 1 Dec 2008 16:52:34 +0000 (-0800)
Subject: mmc: sd: When resuming, try a little harder to init the card
X-Git-Tag: firefly_0821_release~4090^2~860
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d4322f4552aad52b8ce2c229eb35d391cbe09ef0;p=firefly-linux-kernel-4.4.55.git

mmc: sd: When resuming, try a little harder to init the card

Signed-off-by: San Mehat <san@android.com>
---

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 232c04fd7cc3..a866485393c6 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -1106,12 +1106,31 @@ static int mmc_sd_suspend(struct mmc_host *host)
 static int mmc_sd_resume(struct mmc_host *host)
 {
 	int err;
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
+	int retries;
+#endif
 
 	BUG_ON(!host);
 	BUG_ON(!host->card);
 
 	mmc_claim_host(host);
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
+	retries = 5;
+	while (retries) {
+		err = mmc_sd_init_card(host, host->ocr, host->card);
+
+		if (err) {
+			printk(KERN_ERR "%s: Re-init card rc = %d (retries = %d)\n",
+			       mmc_hostname(host), err, retries);
+			mdelay(5);
+			retries--;
+			continue;
+		}
+		break;
+	}
+#else
 	err = mmc_sd_init_card(host, host->ocr, host->card);
+#endif
 	mmc_release_host(host);
 
 	return err;