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X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aisheng.dong@nxp.com, ulf.hansson@linaro.org, dongas86@gmail.com, chris@printf.net, haibo.chen@nxp.com, adrian.hunter@intel.com, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAD_ENC_HEADER,BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently when card type supports EXT_CSD_CARD_TYPE_DDR_1_8V which means it can work on DDR mode with either 3.3v IO or 1.8v IO voltage. MMC core will first try 1.8v then 3.3v if host claims MMC_CAP_1_8V_DDR support. However the host driver voltage switch code does not check NO_1_8_V quirk which may set a wrong 1.8v and causes the card fixed to 3.3v VIO un-work. Checking 1.8V quirk before setting it to avoid such issue. CC: stable Signed-off-by: Dong Aisheng --- drivers/mmc/host/sdhci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2338aab..96ccb15 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1683,6 +1683,8 @@ static int sdhci_do_signal_voltage_switch(struct sdhci_host *host, return -EAGAIN; case MMC_SIGNAL_VOLTAGE_180: + if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) + return -EINVAL; /* * Enable 1.8V Signal Enable in the Host Control2 * register