treewide: replace with error() with pr_err()

U-Boot widely uses error() as a bit noisier variant of printf().

This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:

  # define __compiletime_error(message) __attribute__((error(message)))

This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux.  (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)

Let's convert error() into now treewide-available pr_err().

Done with the help of Coccinelle, excluing tools/ directory.

The semantic patch I used is as follows:

// <smpl>
@@@@
-error
+pr_err
 (...)
// </smpl>

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>

drivers/adc/adc-uclass.c

@@ -64,7 +64,7 @@ static int adc_supply_enable(struct udevice *dev)
 	}
 
 	if (ret)
-		error("%s: can't enable %s-supply!", dev->name, supply_type);
+		pr_err("%s: can't enable %s-supply!", dev->name, supply_type);
 
 	return ret;
 }
@@ -389,12 +389,12 @@ static int adc_pre_probe(struct udevice *dev)
 	/* Set ADC VDD platdata: polarity, uV, regulator (phandle). */
 	ret = adc_vdd_platdata_set(dev);
 	if (ret)
-		error("%s: Can't update Vdd. Error: %d", dev->name, ret);
+		pr_err("%s: Can't update Vdd. Error: %d", dev->name, ret);
 
 	/* Set ADC VSS platdata: polarity, uV, regulator (phandle). */
 	ret = adc_vss_platdata_set(dev);
 	if (ret)
-		error("%s: Can't update Vss. Error: %d", dev->name, ret);
+		pr_err("%s: Can't update Vss. Error: %d", dev->name, ret);
 
 	return 0;
 }

drivers/adc/exynos-adc.c

@@ -22,7 +22,7 @@ int exynos_adc_channel_data(struct udevice *dev, int channel,
 	struct exynos_adc_v2 *regs = priv->regs;
 
 	if (channel != priv->active_channel) {
-		error("Requested channel is not active!");
+		pr_err("Requested channel is not active!");
 		return -EINVAL;
 	}
 
@@ -80,7 +80,7 @@ int exynos_adc_probe(struct udevice *dev)
 
 	/* Check HW version */
 	if (readl(&regs->version) != ADC_V2_VERSION) {
-		error("This driver supports only ADC v2!");
+		pr_err("This driver supports only ADC v2!");
 		return -ENXIO;
 	}
 
@@ -109,7 +109,7 @@ int exynos_adc_ofdata_to_platdata(struct udevice *dev)
 
 	priv->regs = (struct exynos_adc_v2 *)devfdt_get_addr(dev);
 	if (priv->regs == (struct exynos_adc_v2 *)FDT_ADDR_T_NONE) {
-		error("Dev: %s - can't get address!", dev->name);
+		pr_err("Dev: %s - can't get address!", dev->name);
 		return -ENODATA;
 	}
 

drivers/adc/rockchip-saradc.c

@@ -46,7 +46,7 @@ int rockchip_saradc_channel_data(struct udevice *dev, int channel,
 	struct adc_uclass_platdata *uc_pdata = dev_get_uclass_platdata(dev);
 
 	if (channel != priv->active_channel) {
-		error("Requested channel is not active!");
+		pr_err("Requested channel is not active!");
 		return -EINVAL;
 	}
 
@@ -69,7 +69,7 @@ int rockchip_saradc_start_channel(struct udevice *dev, int channel)
 	struct rockchip_saradc_priv *priv = dev_get_priv(dev);
 
 	if (channel < 0 || channel >= priv->data->num_channels) {
-		error("Requested channel is invalid!");
+		pr_err("Requested channel is invalid!");
 		return -EINVAL;
 	}
 
@@ -125,7 +125,7 @@ int rockchip_saradc_ofdata_to_platdata(struct udevice *dev)
 	data = (struct rockchip_saradc_data *)dev_get_driver_data(dev);
 	priv->regs = (struct rockchip_saradc_regs *)dev_read_addr(dev);
 	if (priv->regs == (struct rockchip_saradc_regs *)FDT_ADDR_T_NONE) {
-		error("Dev: %s - can't get address!", dev->name);
+		pr_err("Dev: %s - can't get address!", dev->name);
 		return -ENODATA;
 	}
 

drivers/adc/sandbox.c

@@ -61,7 +61,7 @@ int sandbox_adc_channel_data(struct udevice *dev, int channel,
 	/* For single-channel conversion mode, check if channel was selected */
 	if ((priv->conversion_mode == SANDBOX_ADC_MODE_SINGLE_CHANNEL) &&
 	    !(priv->active_channel_mask & (1 << channel))) {
-		error("Request for an inactive channel!");
+		pr_err("Request for an inactive channel!");
 		return -EINVAL;
 	}
 
@@ -82,12 +82,12 @@ int sandbox_adc_channels_data(struct udevice *dev, unsigned int channel_mask,
 
 	/* Return error for single-channel conversion mode */
 	if (priv->conversion_mode == SANDBOX_ADC_MODE_SINGLE_CHANNEL) {
-		error("ADC in single-channel mode!");
+		pr_err("ADC in single-channel mode!");
 		return -EPERM;
 	}
 	/* Check channel selection */
 	if (!(priv->active_channel_mask & channel_mask)) {
-		error("Request for an inactive channel!");
+		pr_err("Request for an inactive channel!");
 		return -EINVAL;
 	}
 	/* The conversion must be started before reading the data */