Daniel Mack 4a31f2eff3 ARM: mx3: Fix a race condition in mxcmmc ... From cefcdab08d1c9636c4a7290bc2bbe937d051bce4 Mon Sep 17 00:00:00 2001 From: Volker Ernst <volker.ernst@txtr.com> Date: Mon, 26 Apr 2010 22:51:07 +0200 Subject: [PATCH] ARM: mx3: Fix a race condition in mxcmmc This fixes a race condition regarding interrupt bits in the SDHC controller driver code. In case of PIO-transfer it does not clear SDHC-status bit#11/12 in the INT-handler anymore. INT-handler might be called during an ongoing PIO-data-transfer (with some other INT-flag set) and PIO-transfer depends on these bits being set to detect the end of the data-transfer. This also means that at the end of PIO- transfer that PIO-software has to clear these bits itself. However in case of DMA-transfer these bits have to be cleared in the INT-handler, because they are used to generate INTs then. Works solid, no more problems here, can transfer big files. Signed-off-by: Volker Ernst <volker.ernst@txtr.com> Acked-by: Daniel Mack <daniel@caiaq.de> Cc: Andy Green <andy@warmcat.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>		2010-05-17 11:44:13 +02:00
..
card	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
core	ARM: MXC: mxcmmc: work around a bug in the SDHC busy line handling	2010-04-14 09:18:07 +02:00
host	ARM: mx3: Fix a race condition in mxcmmc	2010-05-17 11:44:13 +02:00
Kconfig	mmc: explicitly mention SDIO support in Kconfig	2008-10-12 11:04:36 +02:00
Makefile	mmc: Move core functions to subdir	2007-05-01 13:04:18 +02:00