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mmc: sdhci: Allow override of mmc host operations

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In the past, fixes for specific hardware devices were implemented
in sdhci using quirks.  That approach is no longer accepted because
the growing number of quirks was starting to make the code difficult
to understand and maintain.

One alternative to quirks, is to allow drivers to override the default
mmc host operations.  This patch makes it easy to do that, and it is
needed for a subsequent bug fix, for which separate patches are
provided.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2016-02-09 16:12:35 +02:00 committed by Ulf Hansson
parent a32ef81c98
commit bf60e592a1
2 changed files with 3 additions and 1 deletions
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3
drivers/mmc/host/sdhci.c
View File

@ -2849,6 +2849,8 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
host = mmc_priv(mmc);
host->mmc = mmc;
host->mmc_host_ops = sdhci_ops;
mmc->ops = &host->mmc_host_ops;
return host;
}
@ -3037,7 +3039,6 @@ int sdhci_add_host(struct sdhci_host *host)
/*
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
max_clk = host->max_clk;
if (host->ops->get_min_clock)

1
drivers/mmc/host/sdhci.h
View File

@ -430,6 +430,7 @@ struct sdhci_host {
/* Internal data */
struct mmc_host *mmc; /* MMC structure */
struct mmc_host_ops mmc_host_ops; /* MMC host ops */
u64 dma_mask; /* custom DMA mask */
#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)