Artur Rojek 8fb11fa480 sh: dma: Fix DMA channel offset calculation ... [ Upstream commit e82e475848 ] Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differing number of DMA channels, which can be distributed between up to two DMAC modules. The existing implementation fails to correctly accommodate for all those variations, resulting in wrong channel offset calculations and leading to kernel panics. Rewrite dma_base_addr() in order to properly calculate channel offsets in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that the correct DMAC module base is selected for the DMAOR register. Fixes: 7f47c7189b ("sh: dma: More legacy cpu dma chainsawing.") Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/20230527164452.64797-2-contact@artur-rojek.eu Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-19 16:22:07 +02:00
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boards	mmc: sh_mmcif: move platform_data header to proper location	2022-04-26 14:05:21 +02:00
boot	mmc: sh_mmcif: move platform_data header to proper location	2022-04-26 14:05:21 +02:00
cchips	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
configs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
drivers	sh: dma: Fix DMA channel offset calculation	2023-07-19 16:22:07 +02:00
include	sh: Avoid using IRQ0 on SH3 and SH4	2023-07-19 16:21:54 +02:00
kernel	sh: Avoid using IRQ0 on SH3 and SH4	2023-07-19 16:21:54 +02:00
lib	sh: propage the calling conventions change down to csum_partial_copy_generic()	2020-08-20 15:45:18 -04:00
math-emu	sh: math-emu: fix macro redefined warning	2023-05-17 11:53:44 +02:00
mm	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-07-01 13:16:25 +02:00
tools	sh: Remove SH5-based Cayman platform	2020-08-14 22:05:06 -04:00
Kbuild	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
Kconfig	mm/fault: convert remaining simple cases to lock_mm_and_find_vma()	2023-07-01 13:16:25 +02:00
Kconfig.cpu	docs: sh: convert register-banks.txt to ReST	2020-06-19 14:10:13 -06:00
Kconfig.debug	sh: mcount.S: fix build error when PRINTK is not enabled	2023-05-17 11:53:44 +02:00
Makefile	kbuild: remove head-y syntax	2022-10-02 18:06:03 +09:00