mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 16:31:13 +00:00
92 lines
2.0 KiB
Diff
92 lines
2.0 KiB
Diff
From 39e3d37b1f7194277b8a3ea3536a67ec2d24491e Mon Sep 17 00:00:00 2001
|
|
From: San Mehat <san@android.com>
|
|
Date: Thu, 4 Dec 2008 11:18:00 -0800
|
|
Subject: [PATCH 100/134] mmc: sd: Add retries in re-detection
|
|
|
|
Signed-off-by: San Mehat <san@android.com>
|
|
---
|
|
drivers/mmc/core/sd.c | 46 +++++++++++++++++++++++++++++++++++++++++++---
|
|
1 files changed, 43 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/mmc/core/sd.c
|
|
+++ b/drivers/mmc/core/sd.c
|
|
@@ -558,18 +558,37 @@ static void mmc_sd_remove(struct mmc_hos
|
|
*/
|
|
static void mmc_sd_detect(struct mmc_host *host)
|
|
{
|
|
- int err;
|
|
+ int err = 0;
|
|
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
|
|
+ int retries = 5;
|
|
+#endif
|
|
|
|
BUG_ON(!host);
|
|
BUG_ON(!host->card);
|
|
-
|
|
+
|
|
mmc_claim_host(host);
|
|
|
|
/*
|
|
* Just check if our card has been removed.
|
|
*/
|
|
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
|
|
+ while(retries) {
|
|
+ err = mmc_send_status(host->card, NULL);
|
|
+ printk("%s(%s): err = %d\n", __func__, mmc_hostname(host), err);
|
|
+ if (err) {
|
|
+ retries--;
|
|
+ udelay(5);
|
|
+ continue;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ if (!retries) {
|
|
+ printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
|
|
+ __func__, mmc_hostname(host), err);
|
|
+ }
|
|
+#else
|
|
err = mmc_send_status(host->card, NULL);
|
|
-
|
|
+#endif
|
|
mmc_release_host(host);
|
|
|
|
if (err) {
|
|
@@ -664,6 +683,9 @@ static const struct mmc_bus_ops mmc_sd_o
|
|
int mmc_attach_sd(struct mmc_host *host, u32 ocr)
|
|
{
|
|
int err;
|
|
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
|
|
+ int retries;
|
|
+#endif
|
|
|
|
BUG_ON(!host);
|
|
WARN_ON(!host->claimed);
|
|
@@ -712,9 +734,27 @@ int mmc_attach_sd(struct mmc_host *host,
|
|
/*
|
|
* Detect and init the card.
|
|
*/
|
|
+#ifdef CONFIG_MMC_PARANOID_SD_INIT
|
|
+ retries = 5;
|
|
+ while (retries) {
|
|
+ err = mmc_sd_init_card(host, host->ocr, NULL);
|
|
+ if (err) {
|
|
+ retries--;
|
|
+ continue;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ if (!retries) {
|
|
+ printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n",
|
|
+ mmc_hostname(host), err);
|
|
+ goto err;
|
|
+ }
|
|
+#else
|
|
err = mmc_sd_init_card(host, host->ocr, NULL);
|
|
if (err)
|
|
goto err;
|
|
+#endif
|
|
|
|
mmc_release_host(host);
|
|
|