Messages in this thread Patch in this message | | | From | Wolfram Sang <> | Subject | [PATCH 1/6] ide: palm_bk3710: test clock rate to avoid division by 0 | Date | Wed, 2 Mar 2016 23:33:32 +0100 |
| |
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
The clk API may return 0 on clk_get_rate, so we should check the result before using it as a divisor.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> ---
Should go individually via subsystem tree.
drivers/ide/palm_bk3710.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/ide/palm_bk3710.c b/drivers/ide/palm_bk3710.c index 8012e43bf8f618..46427ea01753b4 100644 --- a/drivers/ide/palm_bk3710.c +++ b/drivers/ide/palm_bk3710.c @@ -325,6 +325,8 @@ static int __init palm_bk3710_probe(struct platform_device *pdev) clk_enable(clk); rate = clk_get_rate(clk); + if (!rate) + return -EINVAL; /* NOTE: round *down* to meet minimum timings; we count in clocks */ ideclk_period = 1000000000UL / rate; -- 2.7.0
| |