From: Irina Tirdea <irina.tirdea@intel.com>
To: Anton Vorontsov <cbouatmailru@gmail.com>,
Colin Cross <ccross@android.com>,
Kees Cook <keescook@chromium.org>,
Tony Luck <tony.luck@intel.com>, Chris Ball <cjb@laptop.org>
Cc: linux-kernel@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>,
Octavian Purdila <octavian.purdila@intel.com>,
Irina Tirdea <irina.tirdea@intel.com>
Subject: [PATCH 16/26] mmc: sdhci: panic write: no sleeping
Date: Tue, 23 Oct 2012 16:48:14 +0300 [thread overview]
Message-ID: <1351000104-13015-17-git-send-email-irina.tirdea@intel.com> (raw)
In-Reply-To: <1351000104-13015-1-git-send-email-irina.tirdea@intel.com>
From: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
---
drivers/mmc/host/sdhci.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1ed78f0..827e34f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1536,6 +1536,14 @@ static int sdhci_check_ro(struct sdhci_host *host)
#define SAMPLE_COUNT 5
+static void sdhci_msleep(struct sdhci_host *host, unsigned int ms)
+{
+ if (mmc_am_panic_task(host->mmc))
+ mdelay(ms);
+ else
+ msleep(ms);
+}
+
static int sdhci_do_get_ro(struct sdhci_host *host)
{
int i, ro_count;
@@ -1549,7 +1557,7 @@ static int sdhci_do_get_ro(struct sdhci_host *host)
if (++ro_count > SAMPLE_COUNT / 2)
return 1;
}
- msleep(30);
+ sdhci_msleep(host, 30);
}
return 0;
}
@@ -1605,6 +1613,14 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
sdhci_unlock_irqrestore(host, flags);
}
+#define sdhci_usleep_range(host, min, max) \
+do { \
+ if (mmc_am_panic_task((host)->mmc)) \
+ mdelay(DIV_ROUND_UP(min, 1000)); \
+ else \
+ usleep_range(min, max); \
+} while (0)
+
static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host,
u16 ctrl)
{
@@ -1623,7 +1639,7 @@ static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host,
}
}
/* Wait for 5ms */
- usleep_range(5000, 5500);
+ sdhci_usleep_range(host, 5000, 5500);
/* 3.3V regulator output should be stable within 5 ms */
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
@@ -1668,7 +1684,7 @@ static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/* Wait for 5ms */
- usleep_range(5000, 5500);
+ sdhci_usleep_range(host, 5000, 5500);
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ctrl & SDHCI_CTRL_VDD_180) {
@@ -1676,7 +1692,7 @@ static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
- usleep_range(1000, 1500);
+ sdhci_usleep_range(host, 1000, 1500);
/*
* If DAT[3:0] level is 1111b, then the card
@@ -1703,7 +1719,7 @@ static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
regulator_disable(host->vmmc);
/* Wait for 1ms as per the spec */
- usleep_range(1000, 1500);
+ sdhci_usleep_range(host, 1000, 1500);
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
if (host->vmmc)
--
1.7.9.5
next prev parent reply other threads:[~2012-10-23 13:53 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-23 13:47 [PATCH 00/26] pstore, mmc: add mmc as backend for pstore Irina Tirdea
2012-10-23 13:47 ` [PATCH 01/26] pstore: allow for big files Irina Tirdea
2012-10-23 16:48 ` Kees Cook
2012-10-25 8:54 ` Tatulea, Dragos
2012-10-23 13:48 ` [PATCH 02/26] pstore: add flags Irina Tirdea
2012-10-23 16:54 ` Kees Cook
2012-10-23 16:57 ` Luck, Tony
2012-10-25 11:25 ` Tatulea, Dragos
2012-10-23 13:48 ` [PATCH 03/26] pstore: add flush Irina Tirdea
2012-10-23 16:50 ` Kees Cook
2012-10-23 13:48 ` [PATCH 04/26] blkoops: add a block device oops / panic logger Irina Tirdea
2012-10-23 13:48 ` [PATCH 05/26] block: add panic write Irina Tirdea
2012-10-23 13:48 ` [PATCH 06/26] mmc: block: add panic write support Irina Tirdea
2012-10-23 13:48 ` [PATCH 07/26] mmc: panic write: bypass host claiming Irina Tirdea
2012-10-23 13:48 ` [PATCH 08/26] mmc: panic write: bypass request completion Irina Tirdea
2012-10-23 13:48 ` [PATCH 09/26] mmc: panic write: suppress host not claimed warnings Irina Tirdea
2012-10-23 13:48 ` [PATCH 10/26] mmc: panic write: do not msleep Irina Tirdea
2012-10-23 13:48 ` [PATCH 11/26] mmc: panic write: bypass clock gating Irina Tirdea
2012-10-23 13:48 ` [PATCH 12/26] mmc: panic write: bypass regulators Irina Tirdea
2012-10-23 13:48 ` [PATCH 13/26] mmc: panic write: trap non panic tasks Irina Tirdea
2012-10-23 13:48 ` [PATCH 14/26] mmc: panic write: bypass bus ref locking Irina Tirdea
2012-10-23 13:48 ` [PATCH 15/26] mmc: sdhci: panic write: bypass spin lock Irina Tirdea
2012-10-23 13:48 ` Irina Tirdea [this message]
2012-10-23 13:48 ` [PATCH 17/26] mmc: sdhci: panic write: call tasklets inline Irina Tirdea
2012-10-23 13:48 ` [PATCH 18/26] mmc: sdhci: panic write: no timeout timer Irina Tirdea
2012-10-23 13:48 ` [PATCH 19/26] mmc: sdhci: panic write: no runtime pm Irina Tirdea
2012-10-23 13:48 ` [PATCH 20/26] mmc: sdhci: panic write: no tuning Irina Tirdea
2012-10-23 13:48 ` [PATCH 21/26] mmc: sdhci: panic write: poll interrupts Irina Tirdea
2012-10-23 13:48 ` [PATCH 22/26] mmc: sdhci: panic write: no dma mapping Irina Tirdea
2012-10-23 13:48 ` [PATCH 23/26] mmc: sdhci: panic write: resume suspended host Irina Tirdea
2012-10-23 13:48 ` [PATCH 24/26] mmc: sdhci: panic write: abort request in progress Irina Tirdea
2012-10-23 13:48 ` [PATCH 25/26] mmc: sdhci: panic write: trap nonpanic tasks Irina Tirdea
2012-10-23 13:48 ` [PATCH 26/26] mmc: sdhci-pci: add panic write support Irina Tirdea
2012-10-29 20:28 ` [PATCH 00/26] pstore, mmc: add mmc as backend for pstore Kirill A. Shutemov
2012-10-29 20:50 ` Chris Ball
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