From 9bc21848b1d6cb8389d927196b16c9950b5e21e9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Sat, 9 Apr 2011 08:16:47 +0200 Subject: mmc: core: mmc_add_card(): fix missing break in switch statement MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes a cosmetic bug that affects printk() for SD-combo cards. Reported-by: Prashanth Bhat Signed-off-by: Michał Mirosław Signed-off-by: Chris Ball --- drivers/mmc/core/bus.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/mmc/core') diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 63667a8f140c..d6d62fd07ee9 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -284,6 +284,7 @@ int mmc_add_card(struct mmc_card *card) type = "SD-combo"; if (mmc_card_blockaddr(card)) type = "SDHC-combo"; + break; default: type = "?"; break; -- cgit v1.2.2 From 26fc8775b51484d8c0a671198639c6d5ae60533e Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 15 Apr 2011 20:08:19 +0200 Subject: mmc: fix a race between card-detect rescan and clock-gate work instances Currently there is a race in the MMC core between a card-detect rescan work and the clock-gating work, scheduled from a command completion. Fix it by removing the dedicated clock-gating mutex and using the MMC standard locking mechanism instead. Signed-off-by: Guennadi Liakhovetski Cc: Simon Horman Cc: Magnus Damm Acked-by: Linus Walleij Cc: Signed-off-by: Chris Ball --- drivers/mmc/core/host.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/mmc/core') diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 461e6a17fb90..2b200c1cfbba 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -94,7 +94,7 @@ static void mmc_host_clk_gate_delayed(struct mmc_host *host) spin_unlock_irqrestore(&host->clk_lock, flags); return; } - mutex_lock(&host->clk_gate_mutex); + mmc_claim_host(host); spin_lock_irqsave(&host->clk_lock, flags); if (!host->clk_requests) { spin_unlock_irqrestore(&host->clk_lock, flags); @@ -104,7 +104,7 @@ static void mmc_host_clk_gate_delayed(struct mmc_host *host) pr_debug("%s: gated MCI clock\n", mmc_hostname(host)); } spin_unlock_irqrestore(&host->clk_lock, flags); - mutex_unlock(&host->clk_gate_mutex); + mmc_release_host(host); } /* @@ -130,7 +130,7 @@ void mmc_host_clk_ungate(struct mmc_host *host) { unsigned long flags; - mutex_lock(&host->clk_gate_mutex); + mmc_claim_host(host); spin_lock_irqsave(&host->clk_lock, flags); if (host->clk_gated) { spin_unlock_irqrestore(&host->clk_lock, flags); @@ -140,7 +140,7 @@ void mmc_host_clk_ungate(struct mmc_host *host) } host->clk_requests++; spin_unlock_irqrestore(&host->clk_lock, flags); - mutex_unlock(&host->clk_gate_mutex); + mmc_release_host(host); } /** @@ -215,7 +215,6 @@ static inline void mmc_host_clk_init(struct mmc_host *host) host->clk_gated = false; INIT_WORK(&host->clk_gate_work, mmc_host_clk_gate_work); spin_lock_init(&host->clk_lock); - mutex_init(&host->clk_gate_mutex); } /** -- cgit v1.2.2