mxcmci_dma_callback() is invoked by DMA drivers in soft-irq
context and can be interrupted by the mxcmci_irq() interrupt
which can finish the mmc request or data transfer and set
host->req or host->data pointers to NULL. Then mxcmci_data_done()
crashes with a null pointer dereferences. Protect all
Add SDHC DMA channel description to the mpc512x device
tree to enable slave channel requesting in the mxcmmc
driver.
mpc512x DMA engine doesn't support endianness conversion
when reading/writing data from peripheral's FIFO, so we
have to swap data buffers before each DMA write and after
each DMA r
mxcmci_devtype struct contains constant data, so
constify this struct.
Signed-off-by: Anatolij Gustschin
---
v2:
- remove build warning fix (already fixed elsewhere) and
change commit log
drivers/mmc/host/mxcmmc.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/dri
slot-gpio API suppors read-only detection when "wp-gpios"
property is present in the device tree mmc node. Use this
API for write-protect detection.
Signed-off-by: Anatolij Gustschin
---
v2:
- no changes
drivers/mmc/host/mxcmmc.c |8 +---
1 files changed, 5 insertions(+), 3 deletions(-
The SDHC controller on mpc512x is compatible with i.MX31 SDHC
controller, the existing MMC host driver can be used on
mpc512x with some modifications, the patch series extends
the existing driver. It is based on the following v3 mxcmmc DT
support patch:
https://patchwork.kernel.org/patch/236863
The SDHC controller on mpc512x is compatible with i.MX31 SDHC,
so the mxcmmc driver can be used on mpc512x, too. Extend the
driver to support mpc512x as well.
Signed-off-by: Anatolij Gustschin
---
v2:
- change to select register accessors at build time
and use ioread32be() and iowrite32be() a
From: Markus Pargmann
Adding devicetree support for imx21-mmc and imx31-mmc. Based on generic
gpio helper functions by Guennadi and generic DMA devicetree bindings.
Signed-off-by: Markus Pargmann
Signed-off-by:: Anatolij Gustschin
---
Notes:
Changes in v3:
- fix first argument of dma_
