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avr32: fix a bug in the MMC driver

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SVN-Revision: 11580
This commit is contained in:
Matteo Croce 2008-06-26 13:02:02 +00:00
parent 4d6ec29824
commit ac30398668
1 changed files with 43 additions and 0 deletions
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43
target/linux/avr32/patches/120-fast_sd_cards_fix.patch Normal file
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@ -0,0 +1,43 @@
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -77,6 +77,7 @@ struct atmel_mci {
struct clk *mck;
struct platform_device *pdev;
+ int pending_stop;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
struct dentry *debugfs_regs;
@@ -866,6 +867,12 @@ static void atmci_tasklet_func(unsigned long priv)
data->bytes_xfered = data->blocks * data->blksz;
atmci_data_complete(host, data);
}
+ /* See if there is a pending STOP which can be sent */
+ if (host->pending_stop && mci_cmd_is_complete(host)) {
+ host->pending_stop = 0;
+ if (mrq->stop && !mci_set_stop_sent_is_completed(host))
+ send_stop_cmd(host->mmc, mrq->data, 0);
+ }
}
static void atmci_cmd_interrupt(struct mmc_host *mmc, u32 status)
@@ -918,9 +925,16 @@ static void atmci_xfer_complete(struct dma_request *_req)
* drivers) or when interrupts are disabled for a long time.
*/
mci_set_dma_complete(host);
- if (data->stop && mci_cmd_is_complete(host)
- && !mci_set_stop_sent_is_completed(host))
- send_stop_cmd(host->mmc, data, 0);
+
+ if (data->stop) {
+ if (!mci_cmd_is_complete(host)) {
+ /* Just remember a STOP must be sent */
+ host->pending_stop = 1;
+ } else if (!mci_set_stop_sent_is_completed(host)) {
+ send_stop_cmd(host->mmc, data, 0);
+ host->pending_stop = 0;
+ }
+ }
/*
* Regardless of what the documentation says, we have to wait