diff options
| author | Matthew Schwartz <matthew.schwartz@linux.dev> | 2026-03-02 13:07:17 -0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2026-03-04 17:48:59 +0100 |
| commit | 2b76e0cc7803e5ab561c875edaba7f6bbd87fbb0 (patch) | |
| tree | 52bf12ff449ee12b3493592aebeaa97d904671e5 /scripts/rt-tester/git@git.tavy.me:linux.git | |
| parent | 901084c51a0a8fb42a3f37d2e9c62083c495f824 (diff) | |
mmc: sdhci-pci-gli: fix GL9750 DMA write corruption
The GL9750 SD host controller has intermittent data corruption during
DMA write operations. The GM_BURST register's R_OSRC_Lmt field
(bits 17:16), which limits outstanding DMA read requests from system
memory, is not being cleared during initialization. The Windows driver
sets R_OSRC_Lmt to zero, limiting requests to the smallest unit.
Clear R_OSRC_Lmt to match the Windows driver behavior. This eliminates
write corruption verified with f3write/f3read tests while maintaining
DMA performance.
Cc: stable@vger.kernel.org
Fixes: e51df6ce668a ("mmc: host: sdhci-pci: Add Genesys Logic GL975x support")
Closes: https://lore.kernel.org/linux-mmc/33d12807-5c72-41ce-8679-57aa11831fad@linux.dev/
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Reviewed-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'scripts/rt-tester/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions