[PATCH v3 0/5] pinctrl: at91: Cleanups

[PATCH v3 0/5] pinctrl: at91: Cleanups

[Andy Shevchenko]

The kasprintf() patch makes me look into the driver code and besides
missed fix, there is a room to improve. Hence this series.

Compile tested only.

Changes in v3:
- added tags (Claudiu)
- dropped unrelated curly bracket change (Claudiu)

Changes in v2:
- fixed compilation errors (LKP)

Andy Shevchenko (5):
  pinctrl: at91: use devm_kasprintf() to avoid potential leaks (part 2)
  pinctrl: at91: Don't mix non-devm calls with devm ones
  pinctrl: at91: Use of_device_get_match_data()
  pinctrl: at91: Use dev_err_probe() instead of custom messaging
  pinctrl: at91: Utilise temporary variable for struct device

 drivers/pinctrl/pinctrl-at91.c | 161 ++++++++++++++-------------------
 1 file changed, 66 insertions(+), 95 deletions(-)

-- 
2.39.1

[PATCH v3 1/5] pinctrl: at91: use devm_kasprintf() to avoid potential leaks (part 2)

[Andy Shevchenko]

Use devm_kasprintf() instead of kasprintf() to avoid any potential
leaks. At the moment drivers have no remove functionality hence
there is no need for fixes tag.

While at it, switch to use devm_kasprintf_strarray().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/pinctrl/pinctrl-at91.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 2e7debb905d5..5c01765c7a2a 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -18,6 +18,7 @@
 #include <linux/pm.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/string_helpers.h>
 
 /* Since we request GPIOs from ourself */
 #include <linux/pinctrl/consumer.h>
@@ -1371,6 +1372,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 
 static int at91_pinctrl_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct at91_pinctrl *info;
 	struct pinctrl_pin_desc *pdesc;
 	int ret, i, j, k;
@@ -1394,9 +1396,19 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	for (i = 0, k = 0; i < gpio_banks; i++) {
+		char **names;
+
+		names = devm_kasprintf_strarray(dev, "pio", MAX_NB_GPIO_PER_BANK);
+		if (!names)
+			return -ENOMEM;
+
 		for (j = 0; j < MAX_NB_GPIO_PER_BANK; j++, k++) {
+			char *name = names[j];
+
+			strreplace(name, '-', i + 'A');
+
 			pdesc->number = k;
-			pdesc->name = kasprintf(GFP_KERNEL, "pio%c%d", i + 'A', j);
+			pdesc->name = name;
 			pdesc++;
 		}
 	}
@@ -1797,7 +1809,8 @@ static const struct of_device_id at91_gpio_of_match[] = {
 
 static int at91_gpio_probe(struct platform_device *pdev)
 {
-	struct device_node *np = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
 	struct at91_gpio_chip *at91_chip = NULL;
 	struct gpio_chip *chip;
 	struct pinctrl_gpio_range *range;
@@ -1866,16 +1879,14 @@ static int at91_gpio_probe(struct platform_device *pdev)
 			chip->ngpio = ngpio;
 	}
 
-	names = devm_kcalloc(&pdev->dev, chip->ngpio, sizeof(char *),
-			     GFP_KERNEL);
-
+	names = devm_kasprintf_strarray(dev, "pio", chip->ngpio);
 	if (!names) {
 		ret = -ENOMEM;
 		goto clk_enable_err;
 	}
 
 	for (i = 0; i < chip->ngpio; i++)
-		names[i] = devm_kasprintf(&pdev->dev, GFP_KERNEL, "pio%c%d", alias_idx + 'A', i);
+		strreplace(names[i], '-', alias_idx + 'A');
 
 	chip->names = (const char *const *)names;
 
-- 
2.39.1

[PATCH v3 2/5] pinctrl: at91: Don't mix non-devm calls with devm ones

[Andy Shevchenko]

Replace devm_clk_get() by devm_clk_get_enabled() and drop
unneeded code pieces. This will make sure we keep the ordering
of the resource allocation correct.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/pinctrl/pinctrl-at91.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 5c01765c7a2a..6d9015ed8a3b 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1849,19 +1849,13 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	at91_chip->pioc_virq = irq;
 	at91_chip->pioc_idx = alias_idx;
 
-	at91_chip->clock = devm_clk_get(&pdev->dev, NULL);
+	at91_chip->clock = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(at91_chip->clock)) {
 		dev_err(&pdev->dev, "failed to get clock, ignoring.\n");
 		ret = PTR_ERR(at91_chip->clock);
 		goto err;
 	}
 
-	ret = clk_prepare_enable(at91_chip->clock);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to prepare and enable clock, ignoring.\n");
-		goto clk_enable_err;
-	}
-
 	at91_chip->chip = at91_gpio_template;
 	at91_chip->id = alias_idx;
 
@@ -1882,7 +1876,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	names = devm_kasprintf_strarray(dev, "pio", chip->ngpio);
 	if (!names) {
 		ret = -ENOMEM;
-		goto clk_enable_err;
+		goto err;
 	}
 
 	for (i = 0; i < chip->ngpio; i++)
@@ -1915,8 +1909,6 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	return 0;
 
 gpiochip_add_err:
-clk_enable_err:
-	clk_disable_unprepare(at91_chip->clock);
 err:
 	dev_err(&pdev->dev, "Failure %i for GPIO %i\n", ret, alias_idx);
 
-- 
2.39.1

[PATCH v3 3/5] pinctrl: at91: Use of_device_get_match_data()

[Andy Shevchenko]

Use of_device_get_match_data() to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/pinctrl/pinctrl-at91.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 6d9015ed8a3b..055a88b2dacc 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1304,8 +1304,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 		return -ENODEV;
 
 	info->dev = &pdev->dev;
-	info->ops = (const struct at91_pinctrl_mux_ops *)
-		of_match_device(at91_pinctrl_of_match, &pdev->dev)->data;
+	info->ops = of_device_get_match_data(dev);
 	at91_pinctrl_child_count(info, np);
 
 	/*
@@ -1844,8 +1843,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	at91_chip->ops = (const struct at91_pinctrl_mux_ops *)
-		of_match_device(at91_gpio_of_match, &pdev->dev)->data;
+	at91_chip->ops = of_device_get_match_data(dev);
 	at91_chip->pioc_virq = irq;
 	at91_chip->pioc_idx = alias_idx;
 
-- 
2.39.1

[PATCH v3 4/5] pinctrl: at91: Use dev_err_probe() instead of custom messaging

[Andy Shevchenko]

The custom message has no value except printing the error code,
the same does dev_err_probe(). Let's use the latter for the sake
of unification.

Note that some APIs already have messaging in them and some simply
do not require the current noise.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/pinctrl/pinctrl-at91.c | 64 +++++++++++-----------------------
 1 file changed, 21 insertions(+), 43 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 055a88b2dacc..08f88403affb 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1294,10 +1294,11 @@ static const struct of_device_id at91_pinctrl_of_match[] = {
 static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 				 struct at91_pinctrl *info)
 {
+	struct device *dev = &pdev->dev;
 	int ret = 0;
 	int i, j, ngpio_chips_enabled = 0;
 	uint32_t *tmp;
-	struct device_node *np = pdev->dev.of_node;
+	struct device_node *np = dev->of_node;
 	struct device_node *child;
 
 	if (!np)
@@ -1360,9 +1361,8 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 			continue;
 		ret = at91_pinctrl_parse_functions(child, info, i++);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to parse function\n");
 			of_node_put(child);
-			return ret;
+			return dev_err_probe(dev, ret, "failed to parse function\n");
 		}
 	}
 
@@ -1415,11 +1415,8 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, info);
 	info->pctl = devm_pinctrl_register(&pdev->dev, &at91_pinctrl_desc,
 					   info);
-
-	if (IS_ERR(info->pctl)) {
-		dev_err(&pdev->dev, "could not register AT91 pinctrl driver\n");
-		return PTR_ERR(info->pctl);
-	}
+	if (IS_ERR(info->pctl))
+		return dev_err_probe(dev, PTR_ERR(info->pctl), "could not register AT91 pinctrl driver\n");
 
 	/* We will handle a range of GPIO pins */
 	for (i = 0; i < gpio_banks; i++)
@@ -1820,39 +1817,28 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	char **names;
 
 	BUG_ON(alias_idx >= ARRAY_SIZE(gpio_chips));
-	if (gpio_chips[alias_idx]) {
-		ret = -EBUSY;
-		goto err;
-	}
+	if (gpio_chips[alias_idx])
+		return dev_err_probe(dev, -EBUSY, "%d slot is occupied.\n", alias_idx);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = irq;
-		goto err;
-	}
+	if (irq < 0)
+		return irq;
 
 	at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
-	if (!at91_chip) {
-		ret = -ENOMEM;
-		goto err;
-	}
+	if (!at91_chip)
+		return -ENOMEM;
 
 	at91_chip->regbase = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(at91_chip->regbase)) {
-		ret = PTR_ERR(at91_chip->regbase);
-		goto err;
-	}
+	if (IS_ERR(at91_chip->regbase))
+		return PTR_ERR(at91_chip->regbase);
 
 	at91_chip->ops = of_device_get_match_data(dev);
 	at91_chip->pioc_virq = irq;
 	at91_chip->pioc_idx = alias_idx;
 
 	at91_chip->clock = devm_clk_get_enabled(&pdev->dev, NULL);
-	if (IS_ERR(at91_chip->clock)) {
-		dev_err(&pdev->dev, "failed to get clock, ignoring.\n");
-		ret = PTR_ERR(at91_chip->clock);
-		goto err;
-	}
+	if (IS_ERR(at91_chip->clock))
+		return dev_err_probe(dev, PTR_ERR(at91_chip->clock), "failed to get clock, ignoring.\n");
 
 	at91_chip->chip = at91_gpio_template;
 	at91_chip->id = alias_idx;
@@ -1865,17 +1851,15 @@ static int at91_gpio_probe(struct platform_device *pdev)
 
 	if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
 		if (ngpio >= MAX_NB_GPIO_PER_BANK)
-			pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
-			       alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
+			dev_err(dev, "at91_gpio.%d, gpio-nb >= %d failback to %d\n",
+				alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
 		else
 			chip->ngpio = ngpio;
 	}
 
 	names = devm_kasprintf_strarray(dev, "pio", chip->ngpio);
-	if (!names) {
-		ret = -ENOMEM;
-		goto err;
-	}
+	if (!names)
+		return -ENOMEM;
 
 	for (i = 0; i < chip->ngpio; i++)
 		strreplace(names[i], '-', alias_idx + 'A');
@@ -1892,11 +1876,11 @@ static int at91_gpio_probe(struct platform_device *pdev)
 
 	ret = at91_gpio_of_irq_setup(pdev, at91_chip);
 	if (ret)
-		goto gpiochip_add_err;
+		return ret;
 
 	ret = gpiochip_add_data(chip, at91_chip);
 	if (ret)
-		goto gpiochip_add_err;
+		return ret;
 
 	gpio_chips[alias_idx] = at91_chip;
 	platform_set_drvdata(pdev, at91_chip);
@@ -1905,12 +1889,6 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
 
 	return 0;
-
-gpiochip_add_err:
-err:
-	dev_err(&pdev->dev, "Failure %i for GPIO %i\n", ret, alias_idx);
-
-	return ret;
 }
 
 static const struct dev_pm_ops at91_gpio_pm_ops = {
-- 
2.39.1

[PATCH v3 5/5] pinctrl: at91: Utilise temporary variable for struct device

[Andy Shevchenko]

We have a temporary variable to keep pointer to struct device.
Utilise it inside the ->probe() implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pinctrl/pinctrl-at91.c | 60 +++++++++++++++-------------------
 1 file changed, 26 insertions(+), 34 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 08f88403affb..de48a8e0f85f 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1304,7 +1304,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 	if (!np)
 		return -ENODEV;
 
-	info->dev = &pdev->dev;
+	info->dev = dev;
 	info->ops = of_device_get_match_data(dev);
 	at91_pinctrl_child_count(info, np);
 
@@ -1324,35 +1324,31 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 	if (ret)
 		return ret;
 
-	dev_dbg(&pdev->dev, "nmux = %d\n", info->nmux);
+	dev_dbg(dev, "nmux = %d\n", info->nmux);
 
-	dev_dbg(&pdev->dev, "mux-mask\n");
+	dev_dbg(dev, "mux-mask\n");
 	tmp = info->mux_mask;
 	for (i = 0; i < gpio_banks; i++) {
 		for (j = 0; j < info->nmux; j++, tmp++) {
-			dev_dbg(&pdev->dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
+			dev_dbg(dev, "%d:%d\t0x%x\n", i, j, tmp[0]);
 		}
 	}
 
-	dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
-	dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
-	info->functions = devm_kcalloc(&pdev->dev,
-					info->nfunctions,
-					sizeof(struct at91_pmx_func),
-					GFP_KERNEL);
+	dev_dbg(dev, "nfunctions = %d\n", info->nfunctions);
+	dev_dbg(dev, "ngroups = %d\n", info->ngroups);
+	info->functions = devm_kcalloc(dev, info->nfunctions, sizeof(*info->functions),
+				       GFP_KERNEL);
 	if (!info->functions)
 		return -ENOMEM;
 
-	info->groups = devm_kcalloc(&pdev->dev,
-					info->ngroups,
-					sizeof(struct at91_pin_group),
-					GFP_KERNEL);
+	info->groups = devm_kcalloc(dev, info->ngroups, sizeof(*info->groups),
+				    GFP_KERNEL);
 	if (!info->groups)
 		return -ENOMEM;
 
-	dev_dbg(&pdev->dev, "nbanks = %d\n", gpio_banks);
-	dev_dbg(&pdev->dev, "nfunctions = %d\n", info->nfunctions);
-	dev_dbg(&pdev->dev, "ngroups = %d\n", info->ngroups);
+	dev_dbg(dev, "nbanks = %d\n", gpio_banks);
+	dev_dbg(dev, "nfunctions = %d\n", info->nfunctions);
+	dev_dbg(dev, "ngroups = %d\n", info->ngroups);
 
 	i = 0;
 
@@ -1376,7 +1372,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 	struct pinctrl_pin_desc *pdesc;
 	int ret, i, j, k;
 
-	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
@@ -1384,13 +1380,10 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	at91_pinctrl_desc.name = dev_name(&pdev->dev);
+	at91_pinctrl_desc.name = dev_name(dev);
 	at91_pinctrl_desc.npins = gpio_banks * MAX_NB_GPIO_PER_BANK;
 	at91_pinctrl_desc.pins = pdesc =
-		devm_kcalloc(&pdev->dev,
-			     at91_pinctrl_desc.npins, sizeof(*pdesc),
-			     GFP_KERNEL);
-
+		devm_kcalloc(dev, at91_pinctrl_desc.npins, sizeof(*pdesc), GFP_KERNEL);
 	if (!at91_pinctrl_desc.pins)
 		return -ENOMEM;
 
@@ -1413,8 +1406,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, info);
-	info->pctl = devm_pinctrl_register(&pdev->dev, &at91_pinctrl_desc,
-					   info);
+	info->pctl = devm_pinctrl_register(dev, &at91_pinctrl_desc, info);
 	if (IS_ERR(info->pctl))
 		return dev_err_probe(dev, PTR_ERR(info->pctl), "could not register AT91 pinctrl driver\n");
 
@@ -1423,7 +1415,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 		if (gpio_chips[i])
 			pinctrl_add_gpio_range(info->pctl, &gpio_chips[i]->range);
 
-	dev_info(&pdev->dev, "initialized AT91 pinctrl driver\n");
+	dev_info(dev, "initialized AT91 pinctrl driver\n");
 
 	return 0;
 }
@@ -1714,6 +1706,7 @@ static void gpio_irq_handler(struct irq_desc *desc)
 static int at91_gpio_of_irq_setup(struct platform_device *pdev,
 				  struct at91_gpio_chip *at91_gpio)
 {
+	struct device		*dev = &pdev->dev;
 	struct gpio_chip	*gpiochip_prev = NULL;
 	struct at91_gpio_chip   *prev = NULL;
 	struct irq_data		*d = irq_get_irq_data(at91_gpio->pioc_virq);
@@ -1721,8 +1714,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
 	struct gpio_irq_chip	*girq;
 	int i;
 
-	gpio_irqchip = devm_kzalloc(&pdev->dev, sizeof(*gpio_irqchip),
-				    GFP_KERNEL);
+	gpio_irqchip = devm_kzalloc(dev, sizeof(*gpio_irqchip), GFP_KERNEL);
 	if (!gpio_irqchip)
 		return -ENOMEM;
 
@@ -1758,7 +1750,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
 	if (!gpiochip_prev) {
 		girq->parent_handler = gpio_irq_handler;
 		girq->num_parents = 1;
-		girq->parents = devm_kcalloc(&pdev->dev, 1,
+		girq->parents = devm_kcalloc(dev, girq->num_parents,
 					     sizeof(*girq->parents),
 					     GFP_KERNEL);
 		if (!girq->parents)
@@ -1824,7 +1816,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return irq;
 
-	at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
+	at91_chip = devm_kzalloc(dev, sizeof(*at91_chip), GFP_KERNEL);
 	if (!at91_chip)
 		return -ENOMEM;
 
@@ -1836,7 +1828,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	at91_chip->pioc_virq = irq;
 	at91_chip->pioc_idx = alias_idx;
 
-	at91_chip->clock = devm_clk_get_enabled(&pdev->dev, NULL);
+	at91_chip->clock = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(at91_chip->clock))
 		return dev_err_probe(dev, PTR_ERR(at91_chip->clock), "failed to get clock, ignoring.\n");
 
@@ -1844,8 +1836,8 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	at91_chip->id = alias_idx;
 
 	chip = &at91_chip->chip;
-	chip->label = dev_name(&pdev->dev);
-	chip->parent = &pdev->dev;
+	chip->label = dev_name(dev);
+	chip->parent = dev;
 	chip->owner = THIS_MODULE;
 	chip->base = alias_idx * MAX_NB_GPIO_PER_BANK;
 
@@ -1886,7 +1878,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, at91_chip);
 	gpio_banks = max(gpio_banks, alias_idx + 1);
 
-	dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
+	dev_info(dev, "at address %p\n", at91_chip->regbase);
 
 	return 0;
 }
-- 
2.39.1

Re: [PATCH v3 5/5] pinctrl: at91: Utilise temporary variable for struct device

[Claudiu.Beznea]

On 15.02.2023 15:42, Andy Shevchenko wrote:
> @@ -1758,7 +1750,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
>         if (!gpiochip_prev) {
>                 girq->parent_handler = gpio_irq_handler;
>                 girq->num_parents = 1;
> -               girq->parents = devm_kcalloc(&pdev->dev, 1,
> +               girq->parents = devm_kcalloc(dev, girq->num_parents,

There is still the change of the 2nd argument of devm_kcalloc() from 1 ->
girq->num_parents (no functional change, though) which doesn't match the
purpose of the patch and is not specified anywhere. Other than this:

Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>

>                                              sizeof(*girq->parents),
>                                              GFP_KERNEL);

Re: [PATCH v3 5/5] pinctrl: at91: Utilise temporary variable for struct device

[Andy Shevchenko]

On Fri, Feb 17, 2023 at 11:54:02AM +0000, Claudiu.Beznea@microchip.com wrote:
> On 15.02.2023 15:42, Andy Shevchenko wrote:
> > @@ -1758,7 +1750,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
> >         if (!gpiochip_prev) {
> >                 girq->parent_handler = gpio_irq_handler;
> >                 girq->num_parents = 1;
> > -               girq->parents = devm_kcalloc(&pdev->dev, 1,
> > +               girq->parents = devm_kcalloc(dev, girq->num_parents,
> 
> There is still the change of the 2nd argument of devm_kcalloc() from 1 ->
> girq->num_parents (no functional change, though) which doesn't match the
> purpose of the patch and is not specified anywhere. Other than this:
> 
> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> 
> >                                              sizeof(*girq->parents),
> >                                              GFP_KERNEL);

Thanks for review. I have no time to fix this. So if Linus is okay to take
the first 4 patches, I'm fine. You or somebody else can submit an updated
5th patch later on.

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v3 5/5] pinctrl: at91: Utilise temporary variable for struct device

[Linus Walleij]

On Fri, Feb 17, 2023 at 12:59 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
> On Fri, Feb 17, 2023 at 11:54:02AM +0000, Claudiu.Beznea@microchip.com wrote:
> > On 15.02.2023 15:42, Andy Shevchenko wrote:
> > > @@ -1758,7 +1750,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
> > >         if (!gpiochip_prev) {
> > >                 girq->parent_handler = gpio_irq_handler;
> > >                 girq->num_parents = 1;
> > > -               girq->parents = devm_kcalloc(&pdev->dev, 1,
> > > +               girq->parents = devm_kcalloc(dev, girq->num_parents,
> >
> > There is still the change of the 2nd argument of devm_kcalloc() from 1 ->
> > girq->num_parents (no functional change, though) which doesn't match the
> > purpose of the patch and is not specified anywhere. Other than this:
> >
> > Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> >
> > >                                              sizeof(*girq->parents),
> > >                                              GFP_KERNEL);
>
> Thanks for review. I have no time to fix this. So if Linus is okay to take
> the first 4 patches, I'm fine. You or somebody else can submit an updated
> 5th patch later on.

I applied all 5 patches. The num_parents is set to 1 on the line right
above and it's the right thing to do, and has a reviewed tag so I don't
see the problem with this patch, let's not overinvest in process.

Thanks for the very nice cleanups!

I applied it locally so it won't be in linux-next until after the merge
window closes.

Yours,
Linus Walleij

Re: [PATCH v3 5/5] pinctrl: at91: Utilise temporary variable for struct device

[Andy Shevchenko]

On Mon, Feb 27, 2023 at 10:44:21PM +0100, Linus Walleij wrote:
> On Fri, Feb 17, 2023 at 12:59 PM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> > On Fri, Feb 17, 2023 at 11:54:02AM +0000, Claudiu.Beznea@microchip.com wrote:
> > > On 15.02.2023 15:42, Andy Shevchenko wrote:

...

> > > >                 girq->num_parents = 1;
> > > > -               girq->parents = devm_kcalloc(&pdev->dev, 1,
> > > > +               girq->parents = devm_kcalloc(dev, girq->num_parents,
> > >
> > > There is still the change of the 2nd argument of devm_kcalloc() from 1 ->
> > > girq->num_parents (no functional change, though) which doesn't match the
> > > purpose of the patch and is not specified anywhere. Other than this:
> > >
> > > Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> > >
> > > >                                              sizeof(*girq->parents),
> > > >                                              GFP_KERNEL);
> >
n
> > Thanks for review. I have no time to fix this. So if Linus is okay to take
> > the first 4 patches, I'm fine. You or somebody else can submit an updated
> > 5th patch later on.
> 
> I applied all 5 patches. The num_parents is set to 1 on the line right
> above and it's the right thing to do, and has a reviewed tag so I don't
> see the problem with this patch, let's not overinvest in process.
> 
> Thanks for the very nice cleanups!

Thank you!

> I applied it locally so it won't be in linux-next until after the merge
> window closes.

-- 
With Best Regards,
Andy Shevchenko