mmc: sunxi-mmc: Fix DMA descriptors allocated above 32 bits
authorSamuel Holland <samuel@sholland.org>
Sun, 24 Apr 2022 23:17:50 +0000 (18:17 -0500)
committerUlf Hansson <ulf.hansson@linaro.org>
Wed, 4 May 2022 09:50:12 +0000 (11:50 +0200)
commite9f3fb523dbf476dc86beea23f5b5ca8f9687c93
tree31d306fd42cd30603f9e8feb08efbae4b5c10389
parent4bc31edebde51fcf8ad0794763b8679a7ecb5ec0
mmc: sunxi-mmc: Fix DMA descriptors allocated above 32 bits

Newer variants of the MMC controller support a 34-bit physical address
space by using word addresses instead of byte addresses. However, the
code truncates the DMA descriptor address to 32 bits before applying the
shift. This breaks DMA for descriptors allocated above the 32-bit limit.

Fixes: 3536b82e5853 ("mmc: sunxi: add support for A100 mmc controller")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220424231751.32053-1-samuel@sholland.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/sunxi-mmc.c