| Message ID | 1453853414-15886-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index b3b0a3e..5d2e222 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.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 */
This is a note to let you know that I have just added a patch titled mmc: sdhci-pci: Do not default to 33 Ohm driver strength for Intel SPT to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue This patch is scheduled to be released in version 4.2.8-ckt3. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 4.2.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ---8<------------------------------------------------------------ From 880d16f3815371b418a5bd8e6a30285ba7ab4b42 Mon Sep 17 00:00:00 2001 From: Adrian Hunter <adrian.hunter@intel.com> Date: Thu, 26 Nov 2015 14:00:45 +0200 Subject: mmc: sdhci-pci: Do not default to 33 Ohm driver strength for Intel SPT commit 1ca896856281d3f1ad4f6f7d4e32e2943452de23 upstream. 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> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/mmc/host/sdhci-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.9.1