From fd2208d7c72ef5995b730f1e23b082261499e334 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Fri, 30 Jun 2006 02:22:28 -0700 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Russell King --- drivers/mmc/sdhci.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers/mmc') 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; -- cgit v1.2.3