mxcmmc : Reset the SDHC hardware if software timeout occurs.
When a software timeout occurs in polling mode hardware was left in
an indeterminate state causing subsequent operations to block.
Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 5950102..dcc9cdb 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -140,6 +140,8 @@
struct work_struct datawork;
};
+static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);
+
static inline int mxcmci_use_dma(struct mxcmci_host *host)
{
return host->do_dma;
@@ -345,8 +347,11 @@
stat = readl(host->base + MMC_REG_STATUS);
if (stat & STATUS_ERR_MASK)
return stat;
- if (time_after(jiffies, timeout))
+ if (time_after(jiffies, timeout)) {
+ mxcmci_softreset(host);
+ mxcmci_set_clk_rate(host, host->clock);
return STATUS_TIME_OUT_READ;
+ }
if (stat & mask)
return 0;
cpu_relax();