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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Changed spinlock array to single. It is preparation for irq support which is shared between two channels that's why spinlock should be only one. Signed-off-by: Srinivas Neeli --- Changes in V3: -Created new patch for spinlock changes. --- drivers/gpio/gpio-xilinx.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c index 99d603bfb6f0..69bdf1910215 100644 --- a/drivers/gpio/gpio-xilinx.c +++ b/drivers/gpio/gpio-xilinx.c @@ -47,7 +47,7 @@ struct xgpio_instance { unsigned int gpio_width[2]; u32 gpio_state[2]; u32 gpio_dir[2]; - spinlock_t gpio_lock[2]; + spinlock_t gpio_lock; /* For serializing operations */ struct clk *clk; }; @@ -113,7 +113,7 @@ static void xgpio_set(struct gpio_chip *gc, unsigned int gpio, int val) int index = xgpio_index(chip, gpio); int offset = xgpio_offset(chip, gpio); - spin_lock_irqsave(&chip->gpio_lock[index], flags); + spin_lock_irqsave(&chip->gpio_lock, flags); /* Write to GPIO signal and set its direction to output */ if (val) @@ -124,7 +124,7 @@ static void xgpio_set(struct gpio_chip *gc, unsigned int gpio, int val) xgpio_writereg(chip->regs + XGPIO_DATA_OFFSET + xgpio_regoffset(chip, gpio), chip->gpio_state[index]); - spin_unlock_irqrestore(&chip->gpio_lock[index], flags); + spin_unlock_irqrestore(&chip->gpio_lock, flags); } /** @@ -148,8 +148,7 @@ static void xgpio_set_multiple(struct gpio_chip *gc, unsigned long *mask, DECLARE_BITMAP(new, 64); DECLARE_BITMAP(changed, 64); - spin_lock_irqsave(&chip->gpio_lock[0], flags); - spin_lock(&chip->gpio_lock[1]); + spin_lock_irqsave(&chip->gpio_lock, flags); bitmap_set_value(old, state[0], 0, width[0]); bitmap_set_value(old, state[1], width[0], width[1]); @@ -170,8 +169,7 @@ static void xgpio_set_multiple(struct gpio_chip *gc, unsigned long *mask, xgpio_writereg(chip->regs + XGPIO_DATA_OFFSET + XGPIO_CHANNEL_OFFSET, state[1]); - spin_unlock(&chip->gpio_lock[1]); - spin_unlock_irqrestore(&chip->gpio_lock[0], flags); + spin_unlock_irqrestore(&chip->gpio_lock, flags); } /** @@ -190,14 +188,14 @@ static int xgpio_dir_in(struct gpio_chip *gc, unsigned int gpio) int index = xgpio_index(chip, gpio); int offset = xgpio_offset(chip, gpio); - spin_lock_irqsave(&chip->gpio_lock[index], flags); + spin_lock_irqsave(&chip->gpio_lock, flags); /* Set the GPIO bit in shadow register and set direction as input */ chip->gpio_dir[index] |= BIT(offset); xgpio_writereg(chip->regs + XGPIO_TRI_OFFSET + xgpio_regoffset(chip, gpio), chip->gpio_dir[index]); - spin_unlock_irqrestore(&chip->gpio_lock[index], flags); + spin_unlock_irqrestore(&chip->gpio_lock, flags); return 0; } @@ -221,7 +219,7 @@ static int xgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) int index = xgpio_index(chip, gpio); int offset = xgpio_offset(chip, gpio); - spin_lock_irqsave(&chip->gpio_lock[index], flags); + spin_lock_irqsave(&chip->gpio_lock, flags); /* Write state of GPIO signal */ if (val) @@ -236,7 +234,7 @@ static int xgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) xgpio_writereg(chip->regs + XGPIO_TRI_OFFSET + xgpio_regoffset(chip, gpio), chip->gpio_dir[index]); - spin_unlock_irqrestore(&chip->gpio_lock[index], flags); + spin_unlock_irqrestore(&chip->gpio_lock, flags); return 0; } @@ -294,8 +292,7 @@ static int xgpio_probe(struct platform_device *pdev) if (of_property_read_u32(np, "xlnx,gpio-width", &chip->gpio_width[0])) chip->gpio_width[0] = 32; - spin_lock_init(&chip->gpio_lock[0]); - spin_lock_init(&chip->gpio_lock[1]); + spin_lock_init(&chip->gpio_lock); if (of_property_read_u32(np, "xlnx,is-dual", &is_dual)) is_dual = 0; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel