Commit bf89621d authored Jun 20, 2018 by Vijay Viswanath

mmc: sdhci: Avoid accessing register when clocks are turned off



When we disable the clocks, the SDHCI_CLOCK_CONTROL register is already
updated by sdhci-msm platform driver. So avoid writing the same value
again in sdhci_set_clock() API when we are disabling clock. This also
prevents unclocked access issue.

Change-Id: Id5a89f8832ea439e1e2ab6f91a851963c2ac12c8
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>

parent 6401e390

drivers/mmc/host/sdhci.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1597,6 +1597,7 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)

		host->mmc->actual_clock = 0;

		if (host->clock)
		sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);

		if (clock == 0)