MMC: s3cmci: ensure host stopped on machine shutdown

Ben Dooks
2008-07-17T14:33:09Z

[-- Attachment #1: simtec/simtec-mmc-shutdown.patch --]
[-- Type: text/plain, Size: 2251 bytes --]

Ensure that the s3cmci host controller is turned off
when the machine is shutdown, otherwise we end up
leaving the card powered and processing insertion and
removal events after the system prints "System halted."

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Index: linux-2.6.26-quilt3/drivers/mmc/host/s3cmci.c
===================================================================
--- linux-2.6.26-quilt3.orig/drivers/mmc/host/s3cmci.c 2008-07-17 15:15:35.000000000 +0100
+++ linux-2.6.26-quilt3/drivers/mmc/host/s3cmci.c 2008-07-17 15:29:23.000000000 +0100
@@ -1331,21 +1331,30 @@ static int __devinit s3cmci_probe(struct
return ret;
}

+static void s3cmci_shutdown(struct platform_device *pdev)
+{
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct s3cmci_host *host = mmc_priv(mmc);
+
+ if (host->irq_cd >= 0)
+ free_irq(host->irq_cd, host);
+
+ mmc_remove_host(mmc);
+ clk_disable(host->clk);
+}
+
static int __devexit s3cmci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct s3cmci_host *host = mmc_priv(mmc);

- mmc_remove_host(mmc);
+ s3cmci_shutdown(pdev);

- clk_disable(host->clk);
clk_put(host->clk);

tasklet_disable(&host->pio_tasklet);
s3c2410_dma_free(S3CMCI_DMA, &s3cmci_dma_client);

- if (host->irq_cd >= 0)
- free_irq(host->irq_cd, host);
free_irq(host->irq, host);

iounmap(host->base);
@@ -1397,6 +1406,7 @@ static struct platform_driver s3cmci_241
.driver.owner = THIS_MODULE,
.probe = s3cmci_2410_probe,
.remove = __devexit_p(s3cmci_remove),
+ .shutdown = s3cmci_shutdown,
.suspend = s3cmci_suspend,
.resume = s3cmci_resume,
};
@@ -1406,6 +1416,7 @@ static struct platform_driver s3cmci_241
.driver.owner = THIS_MODULE,
.probe = s3cmci_2412_probe,
.remove = __devexit_p(s3cmci_remove),
+ .shutdown = s3cmci_shutdown,
.suspend = s3cmci_suspend,
.resume = s3cmci_resume,
};
@@ -1415,6 +1426,7 @@ static struct platform_driver s3cmci_244
.driver.owner = THIS_MODULE,
.probe = s3cmci_2440_probe,
.remove = __devexit_p(s3cmci_remove),
+ .shutdown = s3cmci_shutdown,
.suspend = s3cmci_suspend,
.resume = s3cmci_resume,
};