On Tuesday 06 November 2012 10:22 PM, Venkatraman S wrote:
Sometimes, a error occurs just after the Command has been reported
to be successful (CC=1) but before data transfer completes (TC=1).
Setting end_cmd=1 here leads to a NULL pointer dereference of
host->cmd as the command complete has previously been handled.
Set end_cmd only when command complete has not been handled
before, else a NULL pointer dereference occurs.
CC: stable@xxxxxxxxxxxxxxx
Removing stable list as this is not applicable for previous major
release. Sent a patch to fix the same in different way.
Signed-off-by: Venkatraman S <svenkatr@xxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 5434fd8..06d2e03 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -996,7 +996,8 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
else if (status & (CMD_CRC | DATA_CRC))
hsmmc_command_incomplete(host, -EILSEQ);
- end_cmd = 1;
+ if (host->cmd)
+ end_cmd = 1;
if (host->data || host->response_busy) {
end_trans = 1;
host->response_busy = 0;
--
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