Shawn Lin 3b2a067b98 mmc: dw_mmc: avoid race condition of cpu and IDMAC ... We could see an obvious race condition by test that the former write operation by IDMAC aiming to clear OWN bit reach right after the later configuration of the same desc, which makes the IDMAC be in SUSPEND state as the OWN bit was cleared by the asynchronous write operation of IDMAC. The bug can be very easy reproduced on RK3288 or similar when we reduce the running rate of system buses and keep the CPU running faster. So as two separate masters, IDMAC and cpu write the same descriptor stored on the same address, and this should be protected by adding check of OWN bit before preparing new descriptors. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2016-09-26 21:31:35 +02:00
..
card	mmc: card: do away with indirection pointer	2016-09-26 21:31:31 +02:00
core	mmc: core: don't try to switch block size for dual rate mode	2016-09-26 21:31:34 +02:00
host	mmc: dw_mmc: avoid race condition of cpu and IDMAC	2016-09-26 21:31:35 +02:00
Kconfig
Makefile	mmc: sdhci-pci: add platform data	2012-01-11 23:58:47 -05:00