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path: root/drivers/mtd/nand/raw/fsmc_nand.c
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Diffstat (limited to 'drivers/mtd/nand/raw/fsmc_nand.c')
-rw-r--r--drivers/mtd/nand/raw/fsmc_nand.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c
index 7b4742420dfc..811982da3557 100644
--- a/drivers/mtd/nand/raw/fsmc_nand.c
+++ b/drivers/mtd/nand/raw/fsmc_nand.c
@@ -1066,16 +1066,12 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
host->regs_va = base + FSMC_NOR_REG_SIZE +
(host->bank * FSMC_NAND_BANK_SZ);
- host->clk = devm_clk_get(&pdev->dev, NULL);
+ host->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(host->clk)) {
dev_err(&pdev->dev, "failed to fetch block clock\n");
return PTR_ERR(host->clk);
}
- ret = clk_prepare_enable(host->clk);
- if (ret)
- return ret;
-
/*
* This device ID is actually a common AMBA ID as used on the
* AMBA PrimeCell bus. However it is not a PrimeCell.
@@ -1111,7 +1107,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
if (!host->read_dma_chan) {
dev_err(&pdev->dev, "Unable to get read dma channel\n");
ret = -ENODEV;
- goto disable_clk;
+ goto disable_fsmc;
}
host->write_dma_chan = dma_request_channel(mask, filter, NULL);
if (!host->write_dma_chan) {
@@ -1155,9 +1151,8 @@ release_dma_write_chan:
release_dma_read_chan:
if (host->mode == USE_DMA_ACCESS)
dma_release_channel(host->read_dma_chan);
-disable_clk:
+disable_fsmc:
fsmc_nand_disable(host);
- clk_disable_unprepare(host->clk);
return ret;
}
@@ -1182,7 +1177,6 @@ static void fsmc_nand_remove(struct platform_device *pdev)
dma_release_channel(host->write_dma_chan);
dma_release_channel(host->read_dma_chan);
}
- clk_disable_unprepare(host->clk);
}
}
@@ -1200,9 +1194,14 @@ static int fsmc_nand_suspend(struct device *dev)
static int fsmc_nand_resume(struct device *dev)
{
struct fsmc_nand_data *host = dev_get_drvdata(dev);
+ int ret;
if (host) {
- clk_prepare_enable(host->clk);
+ ret = clk_prepare_enable(host->clk);
+ if (ret) {
+ dev_err(dev, "failed to enable clk\n");
+ return ret;
+ }
if (host->dev_timings)
fsmc_nand_setup(host, host->dev_timings);
nand_reset(&host->nand, 0);