Searched hist:b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14 (Results 1 – 2 of 2) sorted by relevance
/linux/drivers/mmc/host/ |
H A D | sdhci-of-esdhc.c | diff b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14 Tue Nov 15 11:13:16 CET 2016 Michael Walle <michael@walle.cc> mmc: sdhci-of-esdhc: fixup PRESENT_STATE read
Since commit 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") the ESDHC driver is broken: mmc0: Card stuck in programming state! __mmc_switch mmc0: error -110 whilst initialising MMC card
Since this commit __mmc_switch() uses ->card_busy(), which is sdhci_card_busy() for the esdhc driver. sdhci_card_busy() uses the PRESENT_STATE register, specifically the DAT0 signal level bit. But the ESDHC uses a non-conformant PRESENT_STATE register, thus a read fixup is required to make the driver work again.
Signed-off-by: Michael Walle <michael@walle.cc> Fixes: 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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H A D | sdhci.h | diff b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14 Tue Nov 15 11:13:16 CET 2016 Michael Walle <michael@walle.cc> mmc: sdhci-of-esdhc: fixup PRESENT_STATE read
Since commit 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") the ESDHC driver is broken: mmc0: Card stuck in programming state! __mmc_switch mmc0: error -110 whilst initialising MMC card
Since this commit __mmc_switch() uses ->card_busy(), which is sdhci_card_busy() for the esdhc driver. sdhci_card_busy() uses the PRESENT_STATE register, specifically the DAT0 signal level bit. But the ESDHC uses a non-conformant PRESENT_STATE register, thus a read fixup is required to make the driver work again.
Signed-off-by: Michael Walle <michael@walle.cc> Fixes: 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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