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 07/26] mmc: panic write: bypass host claiming
Date: Tue, 23 Oct 2012 16:48:05 +0300 [thread overview]
Message-ID: <1351000104-13015-8-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/core/core.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 06c42cf..dbe5332 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -767,6 +767,9 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
unsigned long flags;
int stop;
+ if (mmc_am_panic_task(host))
+ return 0;
+
might_sleep();
add_wait_queue(&host->wq, &wait);
@@ -807,6 +810,9 @@ int mmc_try_claim_host(struct mmc_host *host)
int claimed_host = 0;
unsigned long flags;
+ if (mmc_am_panic_task(host))
+ return 1;
+
spin_lock_irqsave(&host->lock, flags);
if (!host->claimed || host->claimer == current) {
host->claimed = 1;
@@ -837,6 +843,9 @@ void mmc_release_host(struct mmc_host *host)
if (host->ops->disable && host->claim_cnt == 1)
host->ops->disable(host);
+ if (mmc_am_panic_task(host))
+ return;
+
spin_lock_irqsave(&host->lock, flags);
if (--host->claim_cnt) {
/* Release for nested claim */
--
1.7.9.5
next prev parent reply other threads:[~2012-10-23 13:43 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 ` Irina Tirdea [this message]
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 ` [PATCH 16/26] mmc: sdhci: panic write: no sleeping Irina Tirdea
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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