linux-kernel - [PATCH 1/1] drivers/gpio/gpio-xilinx.c (updated): bitmap-fix

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Date:   Thu,  8 Apr 2021 18:31:08 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>,
        Srinivas Neeli <srinivas.neeli@...inx.com>,
        Michal Simek <michal.simek@...inx.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Syed Nayyar Waris <syednwaris@...il.com>,
        vilhelm.gray@...il.com
Subject: [PATCH 1/1] drivers/gpio/gpio-xilinx.c (updated): bitmap-fix

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpio-xilinx.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index d5a08dcdd677..109b32104867 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -75,9 +75,14 @@ struct xgpio_instance {
 	struct clk *clk;
 };
 
+static inline int xgpio_from_bit(struct xgpio_instance *chip, int bit)
+{
+	return bitmap_bitremap(bit, chip->hw_map, chip->sw_map, 64);
+}
+
 static inline int xgpio_to_bit(struct xgpio_instance *chip, int gpio)
 {
-	return bitmap_bitremap(gpio, chip->sw_map, chip->hw_map, chip->gc.ngpio);
+	return bitmap_bitremap(gpio, chip->sw_map, chip->hw_map, 64);
 }
 
 static inline u32 xgpio_get_value32(const unsigned long *map, int bit)
@@ -207,11 +212,11 @@ static void xgpio_set_multiple(struct gpio_chip *gc, unsigned long *mask,
 
 	spin_lock_irqsave(&chip->gpio_lock, flags);
 
-	bitmap_replace(state, chip->state, hw_bits, hw_mask, gc->ngpio);
+	bitmap_replace(state, chip->state, hw_bits, hw_mask, 64);
 
 	xgpio_write_ch_all(chip, XGPIO_DATA_OFFSET, state);
 
-	bitmap_copy(chip->state, state, gc->ngpio);
+	bitmap_copy(chip->state, state, 64);
 
 	spin_unlock_irqrestore(&chip->gpio_lock, flags);
 }
@@ -501,6 +506,7 @@ static void xgpio_irqhandler(struct irq_desc *desc)
 	DECLARE_BITMAP(rising, 64);
 	DECLARE_BITMAP(falling, 64);
 	DECLARE_BITMAP(all, 64);
+	int irq_offset;
 	u32 status;
 	u32 bit;
 
@@ -530,8 +536,10 @@ static void xgpio_irqhandler(struct irq_desc *desc)
 
 	dev_dbg(gc->parent, "IRQ rising %*pb falling %*pb\n", 64, rising, 64, falling);
 
-	for_each_set_bit(bit, all, 64)
-		generic_handle_irq(irq_find_mapping(gc->irq.domain, bit));
+	for_each_set_bit(bit, all, 64) {
+		irq_offset = xgpio_from_bit(chip, bit);
+		generic_handle_irq(irq_find_mapping(gc->irq.domain, irq_offset));
+	}
 
 	chained_irq_exit(irqchip, desc);
 }
-- 
2.30.2