Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (68 commits)
  sdio_uart: Fix SDIO break control to now return success or an error
  mmc: host driver for Ricoh Bay1Controllers
  sdio: sdio_io.c Fix sparse warnings
  sdio: fix the use of hard coded timeout value.
  mmc: OLPC: update vdd/powerup quirk comment
  mmc: fix spares errors of sdhci.c
  mmc: remove multiwrite capability
  wbsd: fix bad dma_addr_t conversion
  atmel-mci: Driver for Atmel on-chip MMC controllers
  mmc: fix sdio_io sparse errors
  mmc: wbsd.c fix shadowing of 'dma' variable
  MMC: S3C24XX: Refuse incorrectly aligned transfers
  MMC: S3C24XX: Add maintainer entry
  MMC: S3C24XX: Update error debugging.
  MMC: S3C24XX: Add media presence test to request handling.
  MMC: S3C24XX: Fix use of msecs where jiffies are needed
  MMC: S3C24XX: Add MODULE_ALIAS() entries for the platform devices
  MMC: S3C24XX: Fix s3c2410_dma_request() return code check.
  MMC: S3C24XX: Allow card-detect on non-IRQ capable pin
  MMC: S3C24XX: Ensure host->mrq->data is valid
  ...

Manually fixed up bogus executable bits on drivers/mmc/core/sdio_io.c
and include/linux/mmc/sdio_func.h when merging.

1 files changed, 27 insertions, 5 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 7ab962fa1d73..10a2080086ca 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -51,8 +51,30 @@ struct mmc_ios {
 
 struct mmc_host_ops {
 	void	(*request)(struct mmc_host *host, struct mmc_request *req);
+	/*
+	 * Avoid calling these three functions too often or in a "fast path",
+	 * since underlaying controller might implement them in an expensive
+	 * and/or slow way.
+	 *
+	 * Also note that these functions might sleep, so don't call them
+	 * in the atomic contexts!
+	 *
+	 * Return values for the get_ro callback should be:
+	 *   0 for a read/write card
+	 *   1 for a read-only card
+	 *   -ENOSYS when not supported (equal to NULL callback)
+	 *   or a negative errno value when something bad happened
+	 *
+	 * Return values for the get_ro callback should be:
+	 *   0 for a absent card
+	 *   1 for a present card
+	 *   -ENOSYS when not supported (equal to NULL callback)
+	 *   or a negative errno value when something bad happened
+	 */
 	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
 	int	(*get_ro)(struct mmc_host *host);
+	int	(*get_cd)(struct mmc_host *host);
+
 	void	(*enable_sdio_irq)(struct mmc_host *host, int enable);
 };
 
@@ -89,11 +111,11 @@ struct mmc_host {
 	unsigned long		caps;		/* Host capabilities */
 
 #define MMC_CAP_4_BIT_DATA	(1 << 0)	/* Can the host do 4 bit transfers */
-#define MMC_CAP_MULTIWRITE	(1 << 1)	/* Can accurately report bytes sent to card on error */
-#define MMC_CAP_MMC_HIGHSPEED	(1 << 2)	/* Can do MMC high-speed timing */
-#define MMC_CAP_SD_HIGHSPEED	(1 << 3)	/* Can do SD high-speed timing */
-#define MMC_CAP_SDIO_IRQ	(1 << 4)	/* Can signal pending SDIO IRQs */
-#define MMC_CAP_SPI		(1 << 5)	/* Talks only SPI protocols */
+#define MMC_CAP_MMC_HIGHSPEED	(1 << 1)	/* Can do MMC high-speed timing */
+#define MMC_CAP_SD_HIGHSPEED	(1 << 2)	/* Can do SD high-speed timing */
+#define MMC_CAP_SDIO_IRQ	(1 << 3)	/* Can signal pending SDIO IRQs */
+#define MMC_CAP_SPI		(1 << 4)	/* Talks only SPI protocols */
+#define MMC_CAP_NEEDS_POLL	(1 << 5)	/* Needs polling for card-detection */
 
 	/* host specific block data */
 	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */