Read-only support.
This patch adds a new callback for the drivers to facilitate reading the
SD card read-only switch. If the callback is not provided then a warning
will be printed and it will default to write-enable.
The read-only switch is a host enforced read-only so the MMC block layer
has
Read-only support.
This patch adds a new callback for the drivers to facilitate reading the
SD card read-only switch. If the callback is not provided then a warning
will be printed and it will default to write-enable.
The read-only switch is a host enforced read-only so the MMC block layer
has
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