irq: Simplify condition in irq_matrix_reserve()

The if condition in irq_matrix_reserve() can be much simpler.

While at it fix a typo in the comment.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210211070953.5914-1-jgross@suse.com

diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c
index 7a9465ffe71d5e229a866fa3e06ea880b69c7a23..6f8b1d171cdc8efbe56a23fd2900721d6c697823 100644 (file)
--- a/kernel/irq/matrix.c
+++ b/kernel/irq/matrix.c
@@ -337,15 +337,14 @@ void irq_matrix_assign(struct irq_matrix *m, unsigned int bit)
  * irq_matrix_reserve - Reserve interrupts
  * @m:         Matrix pointer
  *
- * This is merily a book keeping call. It increments the number of globally
+ * This is merely a book keeping call. It increments the number of globally
  * reserved interrupt bits w/o actually allocating them. This allows to
  * setup interrupt descriptors w/o assigning low level resources to it.
  * The actual allocation happens when the interrupt gets activated.
  */
 void irq_matrix_reserve(struct irq_matrix *m)
 {
-       if (m->global_reserved <= m->global_available &&
-           m->global_reserved + 1 > m->global_available)
+       if (m->global_reserved == m->global_available)
                pr_warn("Interrupt reservation exceeds available resources\n");
 
        m->global_reserved++;