linux-kernel - [PATCH] at91: pmc: Fixed irq's name allocation for programmable clocks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1391445961-20755-1-git-send-email-jjhiblot@traphandler.com>
Date:	Mon,  3 Feb 2014 17:46:01 +0100
From:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
To:	b.brezillon@...rkiz.com, nicolas.ferre@...el.com
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: [PATCH] at91: pmc: Fixed irq's name allocation for programmable clocks

The name provided to request_irq() must be valid until the irq is
released.
This patch allocates and formats the string with kasprintf().

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>
---
 drivers/clk/at91/clk-programmable.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c
index 8e242c7..0f8bf0f 100644
--- a/drivers/clk/at91/clk-programmable.c
+++ b/drivers/clk/at91/clk-programmable.c
@@ -19,6 +19,7 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/string.h>
 
 #include "pmc.h"
 
@@ -247,7 +248,7 @@ at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
 	struct clk_programmable *prog;
 	struct clk *clk = NULL;
 	struct clk_init_data init;
-	char irq_name[11];
+	char *irq_name;
 
 	if (id > PROG_ID_MAX)
 		return ERR_PTR(-EINVAL);
@@ -269,7 +270,7 @@ at91_clk_register_programmable(struct at91_pmc *pmc, unsigned int irq,
 	prog->irq = irq;
 	init_waitqueue_head(&prog->wait);
 	irq_set_status_flags(prog->irq, IRQ_NOAUTOEN);
-	snprintf(irq_name, sizeof(irq_name), "clk-prog%d", id);
+	irq_name = kasprintf(GFP_KERNEL, "clk-prog%d", id);
 	ret = request_irq(prog->irq, clk_programmable_irq_handler,
 			  IRQF_TRIGGER_HIGH, irq_name, prog);
 	if (ret)
-- 
1.8.5.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/