diff options
| author | Adrian Hunter <adrian.hunter@nokia.com> | 2009-09-22 23:44:32 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 14:39:33 (GMT) |
| commit | 9feae246963c648b212abad0f0eb8938de5f5fe5 (patch) | |
| tree | fefcc438ab0b8e502c35950e588664ab07ddc439 /drivers/mmc/core/mmc.c | |
| parent | 319a3f1429c91147058ac26c5f5bac8ec1730bc6 (diff) | |
| download | linux-fsl-qoriq-9feae246963c648b212abad0f0eb8938de5f5fe5.tar.xz | |
mmc: add MMC_CAP_NONREMOVABLE host capability
eMMC's are not removable, so unsafe resume is OK always.
To permit this a new host capability MMC_CAP_NONREMOVABLE has been added
and suspend / resume updated accordingly.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 2fb9d5f..995db18 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -507,8 +507,6 @@ static void mmc_detect(struct mmc_host *host) } } -#ifdef CONFIG_MMC_UNSAFE_RESUME - /* * Suspend callback from host. */ @@ -551,20 +549,49 @@ static void mmc_resume(struct mmc_host *host) } -#else +#ifdef CONFIG_MMC_UNSAFE_RESUME -#define mmc_suspend NULL -#define mmc_resume NULL +static const struct mmc_bus_ops mmc_ops = { + .remove = mmc_remove, + .detect = mmc_detect, + .suspend = mmc_suspend, + .resume = mmc_resume, +}; -#endif +static void mmc_attach_bus_ops(struct mmc_host *host) +{ + mmc_attach_bus(host, &mmc_ops); +} + +#else static const struct mmc_bus_ops mmc_ops = { .remove = mmc_remove, .detect = mmc_detect, + .suspend = NULL, + .resume = NULL, +}; + +static const struct mmc_bus_ops mmc_ops_unsafe = { + .remove = mmc_remove, + .detect = mmc_detect, .suspend = mmc_suspend, .resume = mmc_resume, }; +static void mmc_attach_bus_ops(struct mmc_host *host) +{ + const struct mmc_bus_ops *bus_ops; + + if (host->caps & MMC_CAP_NONREMOVABLE) + bus_ops = &mmc_ops_unsafe; + else + bus_ops = &mmc_ops; + mmc_attach_bus(host, bus_ops); +} + +#endif + /* * Starting point for MMC card init. */ @@ -575,7 +602,7 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr) BUG_ON(!host); WARN_ON(!host->claimed); - mmc_attach_bus(host, &mmc_ops); + mmc_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. |