kernel_optimize_test/drivers/mmc
Guennadi Liakhovetski 0db13fc2ab mmc: fix a deadlock between system suspend and MMC block IO
Performing MMC block IO with simultaneous STR can lead to a deadlock: the
mmc_pm_notify() function claims the host and then calls bus .remove()
method, which lands in mmc_blk_remove(), which calls mmc_blk_remove_req()
then it goes to -> mmc_cleanup_queue() -> kthread_stop(), which waits for
the mmc-block thread to stop. If the mmc-block thread at that time is
processing block requests, it will also try to claim the host in
mmc_blk_issue_rq() and block there. This patch fixes the problem by
calling .remove() before claiming the host.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-01-12 15:17:17 -05:00
..
card mmc: card: Kill block requests if card is removed 2012-01-11 23:58:44 -05:00
core mmc: fix a deadlock between system suspend and MMC block IO 2012-01-12 15:17:17 -05:00
host mmc: sdhci: restore the enabled dma when do reset all 2012-01-12 15:17:17 -05:00
Kconfig
Makefile mmc: sdhci-pci: add platform data 2012-01-11 23:58:47 -05:00