diff options
Diffstat (limited to 'drivers/memory/tegra20-mc.c')
| -rw-r--r-- | drivers/memory/tegra20-mc.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/memory/tegra20-mc.c b/drivers/memory/tegra20-mc.c index 3ed49c1c2b9..7cd82b874ab 100644 --- a/drivers/memory/tegra20-mc.c +++ b/drivers/memory/tegra20-mc.c @@ -17,6 +17,7 @@ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. */ +#include <linux/err.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/ratelimit.h> @@ -57,7 +58,7 @@ static inline u32 mc_readl(struct tegra20_mc *mc, u32 offs) if (offs < 0x24) val = readl(mc->regs[0] + offs); - if (offs < 0x400) + else if (offs < 0x400) val = readl(mc->regs[1] + offs - 0x3c); return val; @@ -65,14 +66,10 @@ static inline u32 mc_readl(struct tegra20_mc *mc, u32 offs) static inline void mc_writel(struct tegra20_mc *mc, u32 val, u32 offs) { - if (offs < 0x24) { + if (offs < 0x24) writel(val, mc->regs[0] + offs); - return; - } - if (offs < 0x400) { + else if (offs < 0x400) writel(val, mc->regs[1] + offs - 0x3c); - return; - } } static const char * const tegra20_mc_client[] = { @@ -181,7 +178,7 @@ static void tegra20_mc_decode(struct tegra20_mc *mc, int n) "carveout" : "trustzone") : ""); } -static const struct of_device_id tegra20_mc_of_match[] __devinitconst = { +static const struct of_device_id tegra20_mc_of_match[] = { { .compatible = "nvidia,tegra20-mc", }, {}, }; @@ -196,13 +193,16 @@ static irqreturn_t tegra20_mc_isr(int irq, void *data) mask &= stat; if (!mask) return IRQ_NONE; - while ((bit = ffs(mask)) != 0) + while ((bit = ffs(mask)) != 0) { tegra20_mc_decode(mc, bit - 1); + mask &= ~BIT(bit - 1); + } + mc_writel(mc, stat, MC_INTSTATUS); return IRQ_HANDLED; } -static int __devinit tegra20_mc_probe(struct platform_device *pdev) +static int tegra20_mc_probe(struct platform_device *pdev) { struct resource *irq; struct tegra20_mc *mc; @@ -218,11 +218,9 @@ static int __devinit tegra20_mc_probe(struct platform_device *pdev) struct resource *res; res = platform_get_resource(pdev, IORESOURCE_MEM, i); - if (!res) - return -ENODEV; - mc->regs[i] = devm_request_and_ioremap(&pdev->dev, res); - if (!mc->regs[i]) - return -EBUSY; + mc->regs[i] = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(mc->regs[i])) + return PTR_ERR(mc->regs[i]); } irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |