The reference to module parameter is already present in the
struct kernel_param dp->arg include/linux/moduleparam.h :-
device_param_cb(name, ops, arg, perm)
level_param_cb(name, ops, arg, perm, level)
__module_param_call(prefix, name, ops, arg, perm, level, flags)
288 /* Default value instead of permissions? */ \
289 static const char __param_str_##name[] = prefix #name; \
290 static struct kernel_param __moduleparam_const __param_##name \
291 __used __section("__param") \
292 __aligned(__alignof__(struct kernel_param)) \
293 = { __param_str_##name, THIS_MODULE, ops, \
294 VERIFY_OCTAL_PERMISSIONS(perm), level, flags, { arg } }
Replace global reference to the g_irq_mode in null_set_irq_mode()
with the function parameter kp-arg and rearrage code that matches
nicely with this patch series.
Also, use this opportunity to print the error message with valid range.
Signed-off-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
---
drivers/block/null_blk/main.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 5325ec57287d..f34a147e0fa7 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -249,12 +249,14 @@ static bool g_shared_tag_bitmap;
module_param_named(shared_tag_bitmap, g_shared_tag_bitmap, bool, 0444);
MODULE_PARM_DESC(shared_tag_bitmap, "Use shared tag bitmap for all submission queues for blk-mq");
-static int g_irqmode = NULL_IRQ_SOFTIRQ;
-
static int null_set_irqmode(const char *str, const struct kernel_param *kp)
{
- return null_param_store_int(str, &g_irqmode, NULL_IRQ_NONE,
- NULL_IRQ_TIMER);
+ int ret;
+
+ ret = null_param_store_int(str, kp->arg, NULL_IRQ_NONE, NULL_IRQ_TIMER);
+ if (ret)
+ pr_err("irqmode valid values 0-none, 1-softirq, 2-timer\n");
+ return ret;
}
static const struct kernel_param_ops null_irqmode_param_ops = {
@@ -262,6 +264,7 @@ static const struct kernel_param_ops null_irqmode_param_ops = {
.get = param_get_int,
};
+static int g_irqmode = NULL_IRQ_SOFTIRQ;
device_param_cb(irqmode, &null_irqmode_param_ops, &g_irqmode, 0444);
MODULE_PARM_DESC(irqmode, "IRQ completion handler. 0-none, 1-softirq, 2-timer");
--
2.29.0
