shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

mmc: sdhci: Add a quirk for broken command queuing

Browse Source 
commit 75d27ea1ab upstream.

Command queuing has been reported broken on some systems based on Intel
GLK. A separate patch disables command queuing in some cases.

This patch adds a quirk for broken command queuing, which enables users
with problems to disable command queuing using sdhci module parameters for
quirks.

Fixes: 8ee82bda23 ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191217095349.14592-2-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Adrian Hunter
2019-12-17 11:53:49 +02:00
committed by Greg Kroah-Hartman
parent cd8f61e277
commit 07aaeed0e5
2 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/mmc/host/sdhci.c
View File

@@ -3549,6 +3549,9 @@ int sdhci_setup_host(struct sdhci_host *host)
mmc_hostname(mmc), host->version);
}
if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
mmc->caps2 &= ~MMC_CAP2_CQE;
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(host->caps & SDHCI_CAN_DO_SDMA))

2
drivers/mmc/host/sdhci.h
View File

@@ -391,6 +391,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
/* Controller reports inverted write-protect state */
#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
/* Controller has unusable command queue engine */
#define SDHCI_QUIRK_BROKEN_CQE (1<<17)
/* Controller does not like fast PIO transfers */
#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
/* Controller has to be forced to use block size of 2048 bytes */