memory: samsung: exynos5422-dmc: simplify dmc->dev usage

Store 'dmc->dev' in local 'dev' variable, to make several pieces of code
using it shorter and easier to read.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240816-cleanup-h-of-node-put-memory-v2-3-9eed0ee16b78@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

drivers/memory/samsung/exynos5422-dmc.c

@@ -339,19 +339,20 @@ static int exynos5_switch_timing_regs(struct exynos5_dmc *dmc, bool set)
 static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 				   struct devfreq_dev_profile *profile)
 {
+	struct device *dev = dmc->dev;
 	int i, ret;
 	int idx;
 	unsigned long freq;
 
-	ret = devm_pm_opp_of_add_table(dmc->dev);
+	ret = devm_pm_opp_of_add_table(dev);
 	if (ret < 0) {
-		dev_err(dmc->dev, "Failed to get OPP table\n");
+		dev_err(dev, "Failed to get OPP table\n");
 		return ret;
 	}
 
-	dmc->opp_count = dev_pm_opp_get_opp_count(dmc->dev);
+	dmc->opp_count = dev_pm_opp_get_opp_count(dev);
 
-	dmc->opp = devm_kmalloc_array(dmc->dev, dmc->opp_count,
+	dmc->opp = devm_kmalloc_array(dev, dmc->opp_count,
 				      sizeof(struct dmc_opp_table), GFP_KERNEL);
 	if (!dmc->opp)
 		return -ENOMEM;
@@ -360,7 +361,7 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 	for (i = 0, freq = ULONG_MAX; i < dmc->opp_count; i++, freq--) {
 		struct dev_pm_opp *opp;
 
-		opp = dev_pm_opp_find_freq_floor(dmc->dev, &freq);
+		opp = dev_pm_opp_find_freq_floor(dev, &freq);
 		if (IS_ERR(opp))
 			return PTR_ERR(opp);
 
@@ -1175,49 +1176,50 @@ static int create_timings_aligned(struct exynos5_dmc *dmc, u32 *reg_timing_row,
 static int of_get_dram_timings(struct exynos5_dmc *dmc)
 {
 	int ret = 0;
+	struct device *dev = dmc->dev;
 	int idx;
 	struct device_node *np_ddr;
 	u32 freq_mhz, clk_period_ps;
 
-	np_ddr = of_parse_phandle(dmc->dev->of_node, "device-handle", 0);
+	np_ddr = of_parse_phandle(dev->of_node, "device-handle", 0);
 	if (!np_ddr) {
-		dev_warn(dmc->dev, "could not find 'device-handle' in DT\n");
+		dev_warn(dev, "could not find 'device-handle' in DT\n");
 		return -EINVAL;
 	}
 
-	dmc->timing_row = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+	dmc->timing_row = devm_kmalloc_array(dev, TIMING_COUNT,
 					     sizeof(u32), GFP_KERNEL);
 	if (!dmc->timing_row) {
 		ret = -ENOMEM;
 		goto put_node;
 	}
 
-	dmc->timing_data = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+	dmc->timing_data = devm_kmalloc_array(dev, TIMING_COUNT,
 					      sizeof(u32), GFP_KERNEL);
 	if (!dmc->timing_data) {
 		ret = -ENOMEM;
 		goto put_node;
 	}
 
-	dmc->timing_power = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+	dmc->timing_power = devm_kmalloc_array(dev, TIMING_COUNT,
 					       sizeof(u32), GFP_KERNEL);
 	if (!dmc->timing_power) {
 		ret = -ENOMEM;
 		goto put_node;
 	}
 
-	dmc->timings = of_lpddr3_get_ddr_timings(np_ddr, dmc->dev,
+	dmc->timings = of_lpddr3_get_ddr_timings(np_ddr, dev,
 						 DDR_TYPE_LPDDR3,
 						 &dmc->timings_arr_size);
 	if (!dmc->timings) {
-		dev_warn(dmc->dev, "could not get timings from DT\n");
+		dev_warn(dev, "could not get timings from DT\n");
 		ret = -EINVAL;
 		goto put_node;
 	}
 
-	dmc->min_tck = of_lpddr3_get_min_tck(np_ddr, dmc->dev);
+	dmc->min_tck = of_lpddr3_get_min_tck(np_ddr, dev);
 	if (!dmc->min_tck) {
-		dev_warn(dmc->dev, "could not get tck from DT\n");
+		dev_warn(dev, "could not get tck from DT\n");
 		ret = -EINVAL;
 		goto put_node;
 	}
@@ -1254,34 +1256,34 @@ static int of_get_dram_timings(struct exynos5_dmc *dmc)
 static int exynos5_dmc_init_clks(struct exynos5_dmc *dmc)
 {
 	int ret;
+	struct device *dev = dmc->dev;
 	unsigned long target_volt = 0;
 	unsigned long target_rate = 0;
 	unsigned int tmp;
 
-	dmc->fout_spll = devm_clk_get(dmc->dev, "fout_spll");
+	dmc->fout_spll = devm_clk_get(dev, "fout_spll");
 	if (IS_ERR(dmc->fout_spll))
 		return PTR_ERR(dmc->fout_spll);
 
-	dmc->fout_bpll = devm_clk_get(dmc->dev, "fout_bpll");
+	dmc->fout_bpll = devm_clk_get(dev, "fout_bpll");
 	if (IS_ERR(dmc->fout_bpll))
 		return PTR_ERR(dmc->fout_bpll);
 
-	dmc->mout_mclk_cdrex = devm_clk_get(dmc->dev, "mout_mclk_cdrex");
+	dmc->mout_mclk_cdrex = devm_clk_get(dev, "mout_mclk_cdrex");
 	if (IS_ERR(dmc->mout_mclk_cdrex))
 		return PTR_ERR(dmc->mout_mclk_cdrex);
 
-	dmc->mout_bpll = devm_clk_get(dmc->dev, "mout_bpll");
+	dmc->mout_bpll = devm_clk_get(dev, "mout_bpll");
 	if (IS_ERR(dmc->mout_bpll))
 		return PTR_ERR(dmc->mout_bpll);
 
-	dmc->mout_mx_mspll_ccore = devm_clk_get(dmc->dev,
-						"mout_mx_mspll_ccore");
+	dmc->mout_mx_mspll_ccore = devm_clk_get(dev, "mout_mx_mspll_ccore");
 	if (IS_ERR(dmc->mout_mx_mspll_ccore))
 		return PTR_ERR(dmc->mout_mx_mspll_ccore);
 
-	dmc->mout_spll = devm_clk_get(dmc->dev, "ff_dout_spll2");
+	dmc->mout_spll = devm_clk_get(dev, "ff_dout_spll2");
 	if (IS_ERR(dmc->mout_spll)) {
-		dmc->mout_spll = devm_clk_get(dmc->dev, "mout_sclk_spll");
+		dmc->mout_spll = devm_clk_get(dev, "mout_sclk_spll");
 		if (IS_ERR(dmc->mout_spll))
 			return PTR_ERR(dmc->mout_spll);
 	}
@@ -1329,38 +1331,37 @@ static int exynos5_dmc_init_clks(struct exynos5_dmc *dmc)
  */
 static int exynos5_performance_counters_init(struct exynos5_dmc *dmc)
 {
+	struct device *dev = dmc->dev;
 	int ret, i;
 
-	dmc->num_counters = devfreq_event_get_edev_count(dmc->dev,
-							"devfreq-events");
+	dmc->num_counters = devfreq_event_get_edev_count(dev, "devfreq-events");
 	if (dmc->num_counters < 0) {
-		dev_err(dmc->dev, "could not get devfreq-event counters\n");
+		dev_err(dev, "could not get devfreq-event counters\n");
 		return dmc->num_counters;
 	}
 
-	dmc->counter = devm_kcalloc(dmc->dev, dmc->num_counters,
+	dmc->counter = devm_kcalloc(dev, dmc->num_counters,
 				    sizeof(*dmc->counter), GFP_KERNEL);
 	if (!dmc->counter)
 		return -ENOMEM;
 
 	for (i = 0; i < dmc->num_counters; i++) {
 		dmc->counter[i] =
-			devfreq_event_get_edev_by_phandle(dmc->dev,
-						"devfreq-events", i);
+			devfreq_event_get_edev_by_phandle(dev, "devfreq-events", i);
 		if (IS_ERR_OR_NULL(dmc->counter[i]))
 			return -EPROBE_DEFER;
 	}
 
 	ret = exynos5_counters_enable_edev(dmc);
 	if (ret < 0) {
-		dev_err(dmc->dev, "could not enable event counter\n");
+		dev_err(dev, "could not enable event counter\n");
 		return ret;
 	}
 
 	ret = exynos5_counters_set_event(dmc);
 	if (ret < 0) {
 		exynos5_counters_disable_edev(dmc);
-		dev_err(dmc->dev, "could not set event counter\n");
+		dev_err(dev, "could not set event counter\n");
 		return ret;
 	}