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authorWilliam Breathitt Gray <william.gray@linaro.org>2022-08-18 19:28:12 +0300
committerBartosz Golaszewski <brgl@bgdev.pl>2022-09-15 11:28:47 +0300
commit443ad0f730172f05fd78c9e9e68c3dfa5555b061 (patch)
tree07265ae7c306814bf213ca0734ef7c4ee3919d87 /drivers/gpio/gpio-104-dio-48e.c
parent0c83a280dc11238f69d9fe2e15186a4aeb1adfe3 (diff)
downloadlinux-443ad0f730172f05fd78c9e9e68c3dfa5555b061.tar.xz
gpio: 104-dio-48e: Ensure number of irq matches number of base
The 104-dio-48e module calls devm_request_irq() for each device. If the number of irq passed to the module does not match the number of base, a default value of 0 is passed to devm_request_irq(). IRQ 0 is probably not what the user wants, so utilize the module_isa_driver_with_irq macro to ensure the number of irq matches the number of base. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Diffstat (limited to 'drivers/gpio/gpio-104-dio-48e.c')
-rw-r--r--drivers/gpio/gpio-104-dio-48e.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c
index a41551870759..8b5172802188 100644
--- a/drivers/gpio/gpio-104-dio-48e.c
+++ b/drivers/gpio/gpio-104-dio-48e.c
@@ -34,7 +34,8 @@ module_param_hw_array(base, uint, ioport, &num_dio48e, 0);
MODULE_PARM_DESC(base, "ACCES 104-DIO-48E base addresses");
static unsigned int irq[MAX_NUM_DIO48E];
-module_param_hw_array(irq, uint, irq, NULL, 0);
+static unsigned int num_irq;
+module_param_hw_array(irq, uint, irq, &num_irq, 0);
MODULE_PARM_DESC(irq, "ACCES 104-DIO-48E interrupt line numbers");
#define DIO48E_NUM_PPI 2
@@ -358,7 +359,7 @@ static struct isa_driver dio48e_driver = {
.name = "104-dio-48e"
},
};
-module_isa_driver(dio48e_driver, num_dio48e);
+module_isa_driver_with_irq(dio48e_driver, num_dio48e, num_irq);
MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
MODULE_DESCRIPTION("ACCES 104-DIO-48E GPIO driver");