diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-24 21:22:33 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-24 21:22:33 +0100 |
commit | baea7b946f00a291b166ccae7fcfed6c01530cc6 (patch) | |
tree | 4aa275fbdbec9c7b9b4629e8bee2bbecd3c6a6af /drivers/mmc/core/sd.c | |
parent | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (diff) | |
parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) |
Merge branch 'origin' into for-linus
Conflicts:
MAINTAINERS
Diffstat (limited to 'drivers/mmc/core/sd.c')
-rw-r--r-- | drivers/mmc/core/sd.c | 75 |
1 files changed, 54 insertions, 21 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 7ad646fe077..10b2a4d20f5 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -210,11 +210,11 @@ static int mmc_read_switch(struct mmc_card *card) err = mmc_sd_switch(card, 0, 0, 1, status); if (err) { - /* - * We all hosts that cannot perform the command - * to fail more gracefully - */ - if (err != -EINVAL) + /* If the host or the card can't do the switch, + * fail more gracefully. */ + if ((err != -EINVAL) + && (err != -ENOSYS) + && (err != -EFAULT)) goto out; printk(KERN_WARNING "%s: problem reading switch " @@ -561,12 +561,10 @@ static void mmc_sd_detect(struct mmc_host *host) } } -#ifdef CONFIG_MMC_UNSAFE_RESUME - /* * Suspend callback from host. */ -static void mmc_sd_suspend(struct mmc_host *host) +static int mmc_sd_suspend(struct mmc_host *host) { BUG_ON(!host); BUG_ON(!host->card); @@ -576,6 +574,8 @@ static void mmc_sd_suspend(struct mmc_host *host) mmc_deselect_cards(host); host->card->state &= ~MMC_STATE_HIGHSPEED; mmc_release_host(host); + + return 0; } /* @@ -584,7 +584,7 @@ static void mmc_sd_suspend(struct mmc_host *host) * This function tries to determine if the same card is still present * and, if so, restore all state to it. */ -static void mmc_sd_resume(struct mmc_host *host) +static int mmc_sd_resume(struct mmc_host *host) { int err; @@ -595,30 +595,63 @@ static void mmc_sd_resume(struct mmc_host *host) err = mmc_sd_init_card(host, host->ocr, host->card); mmc_release_host(host); - if (err) { - mmc_sd_remove(host); - - mmc_claim_host(host); - mmc_detach_bus(host); - mmc_release_host(host); - } + return err; +} +static void mmc_sd_power_restore(struct mmc_host *host) +{ + host->card->state &= ~MMC_STATE_HIGHSPEED; + mmc_claim_host(host); + mmc_sd_init_card(host, host->ocr, host->card); + mmc_release_host(host); } -#else +#ifdef CONFIG_MMC_UNSAFE_RESUME -#define mmc_sd_suspend NULL -#define mmc_sd_resume NULL +static const struct mmc_bus_ops mmc_sd_ops = { + .remove = mmc_sd_remove, + .detect = mmc_sd_detect, + .suspend = mmc_sd_suspend, + .resume = mmc_sd_resume, + .power_restore = mmc_sd_power_restore, +}; -#endif +static void mmc_sd_attach_bus_ops(struct mmc_host *host) +{ + mmc_attach_bus(host, &mmc_sd_ops); +} + +#else static const struct mmc_bus_ops mmc_sd_ops = { .remove = mmc_sd_remove, .detect = mmc_sd_detect, + .suspend = NULL, + .resume = NULL, + .power_restore = mmc_sd_power_restore, +}; + +static const struct mmc_bus_ops mmc_sd_ops_unsafe = { + .remove = mmc_sd_remove, + .detect = mmc_sd_detect, .suspend = mmc_sd_suspend, .resume = mmc_sd_resume, + .power_restore = mmc_sd_power_restore, }; +static void mmc_sd_attach_bus_ops(struct mmc_host *host) +{ + const struct mmc_bus_ops *bus_ops; + + if (host->caps & MMC_CAP_NONREMOVABLE) + bus_ops = &mmc_sd_ops_unsafe; + else + bus_ops = &mmc_sd_ops; + mmc_attach_bus(host, bus_ops); +} + +#endif + /* * Starting point for SD card init. */ @@ -629,7 +662,7 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr) BUG_ON(!host); WARN_ON(!host->claimed); - mmc_attach_bus(host, &mmc_sd_ops); + mmc_sd_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. |