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authorPierre Ossman <drzeus@drzeus.cx>2006-06-30 02:22:28 -0700
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-07-02 16:54:50 +0100
commitfd2208d7c72ef5995b730f1e23b082261499e334 (patch)
tree45ae8cd310437e2688bf78a53a194bc655a940b7 /drivers/mmc/sdhci.c
parent1d676e02970d9e511c9b96101501da90954ee265 (diff)
[MMC] sdhci: check only relevant inhibit bits
Conform to the sdhci specification as to which inhibit bits should be checked at different times. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc/sdhci.c')
-rw-r--r--drivers/mmc/sdhci.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 302dd5bde75..5324eae6d72 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -465,6 +465,7 @@ static void sdhci_finish_data(struct sdhci_host *host)
static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
{
int flags;
+ u32 mask;
unsigned long timeout;
WARN_ON(host->cmd);
@@ -473,11 +474,20 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
/* Wait max 10 ms */
timeout = 10;
- while (readl(host->ioaddr + SDHCI_PRESENT_STATE) &
- (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
+
+ mask = SDHCI_CMD_INHIBIT;
+ if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY))
+ mask |= SDHCI_DATA_INHIBIT;
+
+ /* We shouldn't wait for data inihibit for stop commands, even
+ though they might use busy signaling */
+ if (host->mrq->data && (cmd == host->mrq->data->stop))
+ mask &= ~SDHCI_DATA_INHIBIT;
+
+ while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
if (timeout == 0) {
printk(KERN_ERR "%s: Controller never released "
- "inhibit bits. Please report this to "
+ "inhibit bit(s). Please report this to "
BUGMAIL ".\n", mmc_hostname(host->mmc));
sdhci_dumpregs(host);
cmd->error = MMC_ERR_FAILED;