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| author | Swapna Manupati <swapna.manupati@xilinx.com> | 2019-12-26 17:42:11 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-17 19:48:20 +0100 |
| commit | 8457f26af06153affcd358078f78599fbbaaa6f5 (patch) | |
| tree | 37093d2c8f6c5a67714d0a8b29fa99b6af461e13 | |
| parent | 0bf0a272d787a3a67c6fd3aae2b232d34ca062bf (diff) | |
| download | linux-stable-8457f26af06153affcd358078f78599fbbaaa6f5.tar.gz linux-stable-8457f26af06153affcd358078f78599fbbaaa6f5.tar.bz2 linux-stable-8457f26af06153affcd358078f78599fbbaaa6f5.zip | |
gpio: zynq: Fix for bug in zynq_gpio_restore_context API
commit 36f2e7207f21a83ca0054116191f119ac64583ab upstream.
This patch writes the inverse value of Interrupt Mask Status
register into the Interrupt Enable register in
zynq_gpio_restore_context API to fix the bug.
Fixes: e11de4de28c0 ("gpio: zynq: Add support for suspend resume")
Signed-off-by: Swapna Manupati <swapna.manupati@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Link: https://lore.kernel.org/r/1577362338-28744-2-git-send-email-srinivas.neeli@xilinx.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpio/gpio-zynq.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c index cd475ff4bcad..7835aad6d162 100644 --- a/drivers/gpio/gpio-zynq.c +++ b/drivers/gpio/gpio-zynq.c @@ -681,6 +681,8 @@ static void zynq_gpio_restore_context(struct zynq_gpio *gpio) unsigned int bank_num; for (bank_num = 0; bank_num < gpio->p_data->max_bank; bank_num++) { + writel_relaxed(ZYNQ_GPIO_IXR_DISABLE_ALL, gpio->base_addr + + ZYNQ_GPIO_INTDIS_OFFSET(bank_num)); writel_relaxed(gpio->context.datalsw[bank_num], gpio->base_addr + ZYNQ_GPIO_DATA_LSW_OFFSET(bank_num)); @@ -690,9 +692,6 @@ static void zynq_gpio_restore_context(struct zynq_gpio *gpio) writel_relaxed(gpio->context.dirm[bank_num], gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num)); - writel_relaxed(gpio->context.int_en[bank_num], - gpio->base_addr + - ZYNQ_GPIO_INTEN_OFFSET(bank_num)); writel_relaxed(gpio->context.int_type[bank_num], gpio->base_addr + ZYNQ_GPIO_INTTYPE_OFFSET(bank_num)); @@ -702,6 +701,9 @@ static void zynq_gpio_restore_context(struct zynq_gpio *gpio) writel_relaxed(gpio->context.int_any[bank_num], gpio->base_addr + ZYNQ_GPIO_INTANY_OFFSET(bank_num)); + writel_relaxed(~(gpio->context.int_en[bank_num]), + gpio->base_addr + + ZYNQ_GPIO_INTEN_OFFSET(bank_num)); } } |