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| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-11-26 14:00:45 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-12-22 11:32:14 +0100 |
| commit | 1ca896856281d3f1ad4f6f7d4e32e2943452de23 (patch) | |
| tree | cc7f2a13577efec52094af00d0afa1befc8b6040 /drivers/mmc | |
| parent | adb24d42a516bca8b9741ed21206509daaab5b13 (diff) | |
| download | linux-1ca896856281d3f1ad4f6f7d4e32e2943452de23.tar.gz linux-1ca896856281d3f1ad4f6f7d4e32e2943452de23.tar.bz2 linux-1ca896856281d3f1ad4f6f7d4e32e2943452de23.zip | |
mmc: sdhci-pci: Do not default to 33 Ohm driver strength for Intel SPT
In some cases, the stronger 33 Ohm driver strength must not be used
so it is not a suitable default. Change it to the standard default
50 Ohm value.
The patch applies to v4.2+ except the file name changed. It is
drivers/mmc/host/sdhci-pci.c prior to v.4.4.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-pci-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index cf7ad458b4f4..08f4a9fe8550 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -277,7 +277,7 @@ static int spt_select_drive_strength(struct sdhci_host *host, if (sdhci_pci_spt_drive_strength > 0) drive_strength = sdhci_pci_spt_drive_strength & 0xf; else - drive_strength = 1; /* 33-ohm */ + drive_strength = 0; /* Default 50-ohm */ if ((mmc_driver_type_mask(drive_strength) & card_drv) == 0) drive_strength = 0; /* Default 50-ohm */ |