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Filename Latest commit message Latest commit date
Artur Rojek 4989627157 sh: dma: Fix DMA channel offset calculation
[ Upstream commit e82e47584847129a20b8c9f4a1dcde09374fb0e0 ]

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>
2023-07-27 08:37:24 +02:00
arch sh: dma: Fix DMA channel offset calculation 2023-07-27 08:37:24 +02:00
block block: fix signed int overflow in Amiga partition support 2023-07-27 08:37:19 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-06-21 15:44:08 +02:00
Documentation xsk: Honor SO_BINDTODEVICE on bind 2023-07-27 08:37:23 +02:00
drivers mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0 2023-07-27 08:37:23 +02:00
fs f2fs: fix error path handling in truncate_dnode() 2023-07-27 08:37:23 +02:00
include media: videodev2.h: Fix struct v4l2_input tuner index comment 2023-07-27 08:37:20 +02:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-08 11:22:59 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel kexec: fix a memory leak in crash_shrink_memory() 2023-07-27 08:37:10 +02:00
lib lib/ts_bm: reset initial match offset for every block of text 2023-07-27 08:37:12 +02:00
LICENSES
mm mm: make wait_on_page_writeback() wait for multiple pending writebacks 2023-06-28 10:18:42 +02:00
net net: dsa: tag_sja1105: fix MAC DA patching from meta frames 2023-07-27 08:37:24 +02:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-07-27 08:37:07 +02:00
scripts modpost: fix off by one in is_executable_section() 2023-07-27 08:37:18 +02:00
security ima: Fix build warnings 2023-07-27 08:37:06 +02:00
sound ASoC: imx-audmix: check return value of devm_kasprintf() 2023-07-27 08:37:15 +02:00
tools perf dwarf-aux: Fix off-by-one in die_get_varname() 2023-07-27 08:37:17 +02:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:44:10 +02:00
Makefile Linux 5.4.250 2023-07-24 19:10:53 +02:00
README

Linux kernel
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