From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Chris Ball <chris@printf.net>
Cc: linux-mmc <linux-mmc@vger.kernel.org>
Subject: [PATCH 02/13] mmc: Fix incorrect warning when setting 0 Hz via debugfs
Date: Mon, 22 Sep 2014 13:17:33 +0300 [thread overview]
Message-ID: <1411381064-1703-3-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1411381064-1703-1-git-send-email-adrian.hunter@intel.com>
It is possible to turn off the card clock by setting
the frequency to zero via debugfs e.g.
echo 0 > /sys/kernel/debug/mmc0/clock
However that produces an incorrect warning that is
designed to warn if the frequency is below the minimum
operating frequency. So correct the warning.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/mmc/core/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index e2e1dd4..16aa7bd 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -995,7 +995,7 @@ void mmc_set_chip_select(struct mmc_host *host, int mode)
*/
static void __mmc_set_clock(struct mmc_host *host, unsigned int hz)
{
- WARN_ON(hz < host->f_min);
+ WARN_ON(hz && hz < host->f_min);
if (hz > host->f_max)
hz = host->f_max;
--
1.8.3.2
next prev parent reply other threads:[~2014-09-22 10:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-22 10:17 [PATCH 00/13] mmc: Some Braswell and misc patches Adrian Hunter
2014-09-22 10:17 ` [PATCH 01/13] mmc: Fix use of wrong device in mmc_gpiod_free_cd() Adrian Hunter
2014-09-22 10:17 ` Adrian Hunter [this message]
2014-09-22 10:17 ` [PATCH 03/13] mmc: It is not an error for the card to be removed while suspended Adrian Hunter
2014-09-22 10:17 ` [PATCH 04/13] mmc: block: Fix error recovery stop cmd timeout calculation Adrian Hunter
2014-09-22 10:17 ` [PATCH 05/13] mmc: block: Fix SD card stop cmd response type Adrian Hunter
2014-09-22 10:17 ` [PATCH 06/13] mmc: sdhci: Add quirk for always getting TC with stop cmd Adrian Hunter
2014-09-22 10:17 ` [PATCH 07/13] mmc: sdhci-acpi: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel host controllers Adrian Hunter
2014-09-22 10:17 ` [PATCH 08/13] mmc: sdhci-acpi: Add a HID and UID for a SD Card host controller Adrian Hunter
2014-09-22 10:17 ` [PATCH 09/13] mmc: sdhci-pci: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel BYT host controllers Adrian Hunter
2014-09-22 10:17 ` [PATCH 10/13] mmc: sdhci-pci: Add Bay Trail and Braswell SD card detect Adrian Hunter
2014-09-22 10:17 ` [PATCH 11/13] mmc: sdhci: Let a driver override timeout clock frequency Adrian Hunter
2014-09-22 10:17 ` [PATCH 12/13] mmc: sdhci-pci: Fix Braswell eMMC " Adrian Hunter
2014-09-22 10:17 ` [PATCH 13/13] mmc: sdhci: Transfer Complete has higher priority than Data Timeout Error Adrian Hunter
2014-09-23 7:34 ` [PATCH 00/13] mmc: Some Braswell and misc patches Ulf Hansson
2014-09-24 7:45 ` Adrian Hunter
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