Commit 30d4b990 authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Ulf Hansson
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mmc: sdhci-of-at91: replace while loop with read_poll_timeout 



Replace while loop with read_poll_timeout().

Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210924082851.2132068-3-claudiu.beznea@microchip.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent af467fad

drivers/mmc/host/sdhci-of-at91.c

+5 −11
Original line number Diff line number Diff line
@@ -62,7 +62,6 @@ static void sdhci_at91_set_force_card_detect(struct sdhci_host *host) 
static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock)

{

	u16 clk;

	unsigned long timeout;



	host->mmc->actual_clock = 0;
@@ -87,17 +86,12 @@ static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock) 
	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);



	/* Wait max 20 ms */

	timeout = 20;

	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))

		& SDHCI_CLOCK_INT_STABLE)) {

		if (timeout == 0) {

	if (read_poll_timeout(sdhci_readw, clk, (clk & SDHCI_CLOCK_INT_STABLE),

			      1000, 20000, false, host, SDHCI_CLOCK_CONTROL)) {

		pr_err("%s: Internal clock never stabilised.\n",

		       mmc_hostname(host->mmc));

		return;

	}

		timeout--;

		mdelay(1);

	}



	clk |= SDHCI_CLOCK_CARD_EN;

	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);