These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / i2c / busses / i2c-au1550.c

diff --git a/kernel/drivers/i2c/busses/i2c-au1550.c b/kernel/drivers/i2c/busses/i2c-au1550.c
index a6aae84..5bcb1f0 100644 (file)
--- a/kernel/drivers/i2c/busses/i2c-au1550.c
+++ b/kernel/drivers/i2c/busses/i2c-au1550.c
@@ -48,7 +48,6 @@ struct i2c_au1550_data {
        void __iomem *psc_base;
        int     xfer_timeout;
        struct i2c_adapter adap;
-       struct resource *ioarea;
 };
 
 static inline void WR(struct i2c_au1550_data *a, int r, unsigned long v)
@@ -284,10 +283,10 @@ static void i2c_au1550_setup(struct i2c_au1550_data *priv)
        /* Set the protocol timer values.  See Table 71 in the
         * Au1550 Data Book for standard timing values.
         */
-       WR(priv, PSC_SMBTMR, PSC_SMBTMR_SET_TH(0) | PSC_SMBTMR_SET_PS(15) | \
-               PSC_SMBTMR_SET_PU(15) | PSC_SMBTMR_SET_SH(15) | \
-               PSC_SMBTMR_SET_SU(15) | PSC_SMBTMR_SET_CL(15) | \
-               PSC_SMBTMR_SET_CH(15));
+       WR(priv, PSC_SMBTMR, PSC_SMBTMR_SET_TH(0) | PSC_SMBTMR_SET_PS(20) | \
+               PSC_SMBTMR_SET_PU(20) | PSC_SMBTMR_SET_SH(20) | \
+               PSC_SMBTMR_SET_SU(20) | PSC_SMBTMR_SET_CL(20) | \
+               PSC_SMBTMR_SET_CH(20));
 
        cfg |= PSC_SMBCFG_DE_ENABLE;
        WR(priv, PSC_SMBCFG, cfg);
@@ -315,30 +314,16 @@ i2c_au1550_probe(struct platform_device *pdev)
        struct resource *r;
        int ret;
 
-       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!r) {
-               ret = -ENODEV;
-               goto out;
-       }
+       priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_au1550_data),
+                           GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
 
-       priv = kzalloc(sizeof(struct i2c_au1550_data), GFP_KERNEL);
-       if (!priv) {
-               ret = -ENOMEM;
-               goto out;
-       }
-
-       priv->ioarea = request_mem_region(r->start, resource_size(r),
-                                         pdev->name);
-       if (!priv->ioarea) {
-               ret = -EBUSY;
-               goto out_mem;
-       }
+       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       priv->psc_base = devm_ioremap_resource(&pdev->dev, r);
+       if (IS_ERR(priv->psc_base))
+               return PTR_ERR(priv->psc_base);
 
-       priv->psc_base = ioremap(r->start, resource_size(r));
-       if (!priv->psc_base) {
-               ret = -EIO;
-               goto out_map;
-       }
        priv->xfer_timeout = 200;
 
        priv->adap.nr = pdev->id;
@@ -351,20 +336,13 @@ i2c_au1550_probe(struct platform_device *pdev)
        i2c_au1550_setup(priv);
 
        ret = i2c_add_numbered_adapter(&priv->adap);
-       if (ret == 0) {
-               platform_set_drvdata(pdev, priv);
-               return 0;
+       if (ret) {
+               i2c_au1550_disable(priv);
+               return ret;
        }
 
-       i2c_au1550_disable(priv);
-       iounmap(priv->psc_base);
-out_map:
-       release_resource(priv->ioarea);
-       kfree(priv->ioarea);
-out_mem:
-       kfree(priv);
-out:
-       return ret;
+       platform_set_drvdata(pdev, priv);
+       return 0;
 }
 
 static int i2c_au1550_remove(struct platform_device *pdev)
@@ -373,10 +351,6 @@ static int i2c_au1550_remove(struct platform_device *pdev)
 
        i2c_del_adapter(&priv->adap);
        i2c_au1550_disable(priv);
-       iounmap(priv->psc_base);
-       release_resource(priv->ioarea);
-       kfree(priv->ioarea);
-       kfree(priv);
        return 0;
 }