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authorMatteo Croce <rootkit85@yahoo.it>2008-06-26 13:02:02 +0000
committerMatteo Croce <rootkit85@yahoo.it>2008-06-26 13:02:02 +0000
commitac303986689be802a5438390624b96235d93714d (patch)
treef1aeb772994da02f8801bb8d3ad257a140ec5107 /target/linux/avr32/patches
parent4d6ec29824bda9b706d409ba214139f8e9ba9d07 (diff)
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avr32: fix a bug in the MMC driver
SVN-Revision: 11580
Diffstat (limited to 'target/linux/avr32/patches')
-rw-r--r--target/linux/avr32/patches/120-fast_sd_cards_fix.patch43
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/avr32/patches/120-fast_sd_cards_fix.patch b/target/linux/avr32/patches/120-fast_sd_cards_fix.patch
new file mode 100644
index 0000000000..2d79b9de05
--- /dev/null
+++ b/target/linux/avr32/patches/120-fast_sd_cards_fix.patch
@@ -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