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path: root/drivers/mmc/sdhci.c
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Diffstat (limited to 'drivers/mmc/sdhci.c')
-rw-r--r--drivers/mmc/sdhci.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 74912dcac82f..007e825dcb93 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -371,17 +371,17 @@ static void sdhci_finish_data(struct sdhci_host *host)
371static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 371static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
372{ 372{
373 int flags; 373 int flags;
374 u32 present; 374 unsigned long timeout;
375 unsigned long max_jiffies;
376 375
377 WARN_ON(host->cmd); 376 WARN_ON(host->cmd);
378 377
379 DBG("Sending cmd (%x)\n", cmd->opcode); 378 DBG("Sending cmd (%x)\n", cmd->opcode);
380 379
381 /* Wait max 10 ms */ 380 /* Wait max 10 ms */
382 max_jiffies = jiffies + (HZ + 99)/100; 381 timeout = 10;
383 do { 382 while (readl(host->ioaddr + SDHCI_PRESENT_STATE) &
384 if (time_after(jiffies, max_jiffies)) { 383 (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
384 if (timeout == 0) {
385 printk(KERN_ERR "%s: Controller never released " 385 printk(KERN_ERR "%s: Controller never released "
386 "inhibit bits. Please report this to " 386 "inhibit bits. Please report this to "
387 BUGMAIL ".\n", mmc_hostname(host->mmc)); 387 BUGMAIL ".\n", mmc_hostname(host->mmc));
@@ -390,8 +390,9 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
390 tasklet_schedule(&host->finish_tasklet); 390 tasklet_schedule(&host->finish_tasklet);
391 return; 391 return;
392 } 392 }
393 present = readl(host->ioaddr + SDHCI_PRESENT_STATE); 393 timeout--;
394 } while (present & (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)); 394 mdelay(1);
395 }
395 396
396 mod_timer(&host->timer, jiffies + 10 * HZ); 397 mod_timer(&host->timer, jiffies + 10 * HZ);
397 398
@@ -490,7 +491,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
490{ 491{
491 int div; 492 int div;
492 u16 clk; 493 u16 clk;
493 unsigned long max_jiffies; 494 unsigned long timeout;
494 495
495 if (clock == host->clock) 496 if (clock == host->clock)
496 return; 497 return;
@@ -511,17 +512,19 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
511 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 512 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
512 513
513 /* Wait max 10 ms */ 514 /* Wait max 10 ms */
514 max_jiffies = jiffies + (HZ + 99)/100; 515 timeout = 10;
515 do { 516 while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL))
516 if (time_after(jiffies, max_jiffies)) { 517 & SDHCI_CLOCK_INT_STABLE)) {
518 if (timeout == 0) {
517 printk(KERN_ERR "%s: Internal clock never stabilised. " 519 printk(KERN_ERR "%s: Internal clock never stabilised. "
518 "Please report this to " BUGMAIL ".\n", 520 "Please report this to " BUGMAIL ".\n",
519 mmc_hostname(host->mmc)); 521 mmc_hostname(host->mmc));
520 sdhci_dumpregs(host); 522 sdhci_dumpregs(host);
521 return; 523 return;
522 } 524 }
523 clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL); 525 timeout--;
524 } while (!(clk & SDHCI_CLOCK_INT_STABLE)); 526 mdelay(1);
527 }
525 528
526 clk |= SDHCI_CLOCK_CARD_EN; 529 clk |= SDHCI_CLOCK_CARD_EN;
527 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL); 530 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);