linux-kernel - [tip: irq/core] irq: Simplify condition in irq_matrix

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Message-ID: <161601406708.398.17055440090597099983.tip-bot2@tip-bot2>
Date:   Wed, 17 Mar 2021 20:47:47 -0000
From:   "tip-bot2 for Juergen Gross" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Juergen Gross <jgross@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] irq: Simplify condition in irq_matrix_reserve()

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     2c6b02185cc608c19a22691fadc6ca2cd114c286
Gitweb:        https://git.kernel.org/tip/2c6b02185cc608c19a22691fadc6ca2cd114c286
Author:        Juergen Gross <jgross@...e.com>
AuthorDate:    Thu, 11 Feb 2021 08:09:53 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 17 Mar 2021 21:44:01 +01:00

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

---
 kernel/irq/matrix.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c
index 7a9465f..6f8b1d1 100644
--- 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++;