Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-26 04:42:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

mmc: mmci: don't read command response when invalid

Browse Source 
Don't read the command response from the registers when either the
command timed out (because there was no response from the card) or
the checksum on the response was invalid.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Russell King - ARM Linux 2011-01-11 16:35:56 +00:00 committed by Chris Ball
parent 021cb59ae3
commit 9047b435a0
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/mmc/host/mmci.c
View File

@ -342,15 +342,15 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
host->cmd = NULL;
cmd->resp[0] = readl(base + MMCIRESPONSE0);
cmd->resp[1] = readl(base + MMCIRESPONSE1);
cmd->resp[2] = readl(base + MMCIRESPONSE2);
cmd->resp[3] = readl(base + MMCIRESPONSE3);
if (status & MCI_CMDTIMEOUT) {
cmd->error = -ETIMEDOUT;
} else if (status & MCI_CMDCRCFAIL && cmd->flags & MMC_RSP_CRC) {
cmd->error = -EILSEQ;
} else {
cmd->resp[0] = readl(base + MMCIRESPONSE0);
cmd->resp[1] = readl(base + MMCIRESPONSE1);
cmd->resp[2] = readl(base + MMCIRESPONSE2);
cmd->resp[3] = readl(base + MMCIRESPONSE3);
}
if (!cmd->data || cmd->error) {