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authorNicolas Pitre <nico@fluxnic.net>2009-09-22 16:45:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:38 -0700
commit17d33e14f7ffc05f8c81e4a3bdb9a8003a05dcce (patch)
treefc5c75b7886cf6ac0af054fd68bb837c88e09dc5 /samples/kobject
parentd08ebeddfb3293fa4bdfca9c610daf1e8ec8b233 (diff)
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mmc: core SDIO suspend/resume support
Currently, all SDIO cards are virtually removed upon a suspend, and completely reprobed upon a resume. This adds the suspend and resume methods to the SDIO bus driver so to be able to dispatch those events to the actual SDIO function drivers for real suspend/resume instead. All active functions on a card must have a driver with both a suspend and a resume method though. Failing that, we fall back to the current behavior of simply "removing" the card when suspending. When resuming, we make sure the same card is still inserted by comparing the vendor and product IDs. If there is a mismatch, or if there is simply no card anymore in the slot, then the previous card is "removed" and the new card is detected. This is further enhanced with the next patch. [akpm@linux-foundation.org: fix warnings] Signed-off-by: Nicolas Pitre <nico@marvell.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>
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