diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/sdhci.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 74912dcac82..007e825dcb9 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -371,17 +371,17 @@ 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 present; - unsigned long max_jiffies; + unsigned long timeout; WARN_ON(host->cmd); DBG("Sending cmd (%x)\n", cmd->opcode); /* Wait max 10 ms */ - max_jiffies = jiffies + (HZ + 99)/100; - do { - if (time_after(jiffies, max_jiffies)) { + timeout = 10; + while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & + (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) { + if (timeout == 0) { printk(KERN_ERR "%s: Controller never released " "inhibit bits. Please report this to " BUGMAIL ".\n", mmc_hostname(host->mmc)); @@ -390,8 +390,9 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) tasklet_schedule(&host->finish_tasklet); return; } - present = readl(host->ioaddr + SDHCI_PRESENT_STATE); - } while (present & (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)); + timeout--; + mdelay(1); + } mod_timer(&host->timer, jiffies + 10 * HZ); @@ -490,7 +491,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { int div; u16 clk; - unsigned long max_jiffies; + unsigned long timeout; if (clock == host->clock) return; @@ -511,17 +512,19 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); /* Wait max 10 ms */ - max_jiffies = jiffies + (HZ + 99)/100; - do { - if (time_after(jiffies, max_jiffies)) { + timeout = 10; + while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL)) + & SDHCI_CLOCK_INT_STABLE)) { + if (timeout == 0) { printk(KERN_ERR "%s: Internal clock never stabilised. " "Please report this to " BUGMAIL ".\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); return; } - clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL); - } while (!(clk & SDHCI_CLOCK_INT_STABLE)); + timeout--; + mdelay(1); + } clk |= SDHCI_CLOCK_CARD_EN; writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); |