From: Boris BREZILLON <b.brezillon@overkiz.com>
To: Nicolas Ferre <nicolas.ferre@atmel.com>,
Ludovic Desroches <ludovic.desroches@atmel.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Chris Ball <cjb@laptop.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
Boris BREZILLON <b.brezillon@overkiz.com>
Subject: [PATCH 3/8] mmc: atmel-mci: prepare clk before calling enable
Date: Wed, 19 Jun 2013 13:16:30 +0200 [thread overview]
Message-ID: <1371640590-9585-1-git-send-email-b.brezillon@overkiz.com> (raw)
In-Reply-To: <1371640263-9268-1-git-send-email-b.brezillon@overkiz.com>
Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to
avoid common clk framework warnings.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
---
drivers/mmc/host/atmel-mci.c | 29 ++++++++++++++++++++---------
1 file changed, 20 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index e75774f..e3058a5 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -380,6 +380,8 @@ static int atmci_regs_show(struct seq_file *s, void *v)
{
struct atmel_mci *host = s->private;
u32 *buf;
+ int ret = 0;
+
buf = kmalloc(ATMCI_REGS_SIZE, GFP_KERNEL);
if (!buf)
@@ -391,9 +393,13 @@ static int atmci_regs_show(struct seq_file *s, void *v)
* consistent.
*/
spin_lock_bh(&host->lock);
- clk_enable(host->mck);
+ ret = clk_prepare_enable(host->mck);
+ if (ret) {
+ spin_unlock_bh(&host->lock);
+ goto out;
+ }
memcpy_fromio(buf, host->regs, ATMCI_REGS_SIZE);
- clk_disable(host->mck);
+ clk_disable_unprepare(host->mck);
spin_unlock_bh(&host->lock);
seq_printf(s, "MR:\t0x%08x%s%s ",
@@ -444,9 +450,10 @@ static int atmci_regs_show(struct seq_file *s, void *v)
val & ATMCI_CFG_LSYNC ? " LSYNC" : "");
}
+out:
kfree(buf);
- return 0;
+ return ret;
}
static int atmci_regs_open(struct inode *inode, struct file *file)
@@ -1281,7 +1288,7 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
spin_lock_bh(&host->lock);
if (!host->mode_reg) {
- clk_enable(host->mck);
+ clk_prepare_enable(host->mck);
atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN);
if (host->caps.has_cfg_reg)
@@ -1361,7 +1368,7 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIDIS);
if (host->mode_reg) {
atmci_readl(host, ATMCI_MR);
- clk_disable(host->mck);
+ clk_disable_unprepare(host->mck);
}
host->mode_reg = 0;
}
@@ -2379,10 +2386,12 @@ static int __init atmci_probe(struct platform_device *pdev)
if (!host->regs)
goto err_ioremap;
- clk_enable(host->mck);
+ ret = clk_prepare_enable(host->mck);
+ if (ret)
+ goto err_clk_prepare_enable;
atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST);
host->bus_hz = clk_get_rate(host->mck);
- clk_disable(host->mck);
+ clk_disable_unprepare(host->mck);
host->mapbase = regs->start;
@@ -2463,6 +2472,8 @@ err_init_slot:
dma_release_channel(host->dma.chan);
free_irq(irq, host);
err_request_irq:
+ clk_unprepare(host->mck);
+err_clk_prepare_enable:
iounmap(host->regs);
err_ioremap:
clk_put(host->mck);
@@ -2487,11 +2498,11 @@ static int __exit atmci_remove(struct platform_device *pdev)
atmci_cleanup_slot(host->slot[i], i);
}
- clk_enable(host->mck);
+ clk_prepare_enable(host->mck);
atmci_writel(host, ATMCI_IDR, ~0UL);
atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIDIS);
atmci_readl(host, ATMCI_SR);
- clk_disable(host->mck);
+ clk_disable_unprepare(host->mck);
if (host->dma.chan)
dma_release_channel(host->dma.chan);
--
1.7.9.5
next prev parent reply other threads:[~2013-06-19 11:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 11:11 [PATCH 0/8] ARM: at91: prepare the move to common clk framework Boris BREZILLON
2013-06-19 11:13 ` [PATCH 1/8] ARM: at91/tc/clocksource: replace clk_enable/disable with clk_prepare_enable/disable_unprepare Boris BREZILLON
2013-06-20 7:33 ` Nicolas Ferre
2013-06-19 11:14 ` [PATCH 2/8] at_hdmac: prepare clk before calling enable Boris BREZILLON
2013-06-20 7:43 ` Nicolas Ferre
2013-06-21 2:40 ` Vinod Koul
2013-06-24 17:40 ` Nicolas Ferre
2013-06-19 11:15 ` Boris BREZILLON
2013-06-19 11:16 ` Boris BREZILLON [this message]
2013-06-19 11:17 ` [PATCH 4/8] tty: atmel_serial: " Boris BREZILLON
2013-06-20 7:48 ` Nicolas Ferre
2013-06-20 8:06 ` boris brezillon
2013-06-20 10:20 ` Nicolas Ferre
2013-06-19 11:18 ` [PATCH 5/8] usb: gadget: at91_udc: " Boris BREZILLON
2013-06-19 11:20 ` [PATCH 6/8] ehci-atmel.c: " Boris BREZILLON
2013-06-19 11:21 ` [PATCH 7/8] USB: ohci-at91: " Boris BREZILLON
2013-06-19 11:22 ` [PATCH 8/8] at91/avr32/atmel_lcdfb: " Boris BREZILLON
2013-06-20 7:49 ` Nicolas Ferre
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