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| author | Michael Walle <[email protected]> | 2016-11-15 10:13:16 +0000 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2016-11-18 13:41:47 +0000 |
| commit | b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14 (patch) | |
| tree | f9566c3945231eea57649951897b82d461c0db4d /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | |
| parent | Linux 4.9-rc5 (diff) | |
| download | kernel-b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14.tar.gz kernel-b0921d5c9ed6ffa8a4d6afc5ee5f136b87445f14.zip | |
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 <[email protected]>
Fixes: 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()")
Acked-by: Yangbo Lu <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Cc: <[email protected]> # v4.8+
Signed-off-by: Ulf Hansson <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c')
0 files changed, 0 insertions, 0 deletions