lkml.org 
[lkml]   [2022]   [May]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drivers/char/agp: Fix divide by zero warning in isoch.c
Date
Add a check to ensure ndevs is not zero. This was found by clang scan
warning: Division by zero [core.DivideZero]
mrq = trq / ndevs;

Signed-off-by: Gautam Menghani <gautam.linuxkernel@gmail.com>
---
drivers/char/agp/isoch.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/char/agp/isoch.c b/drivers/char/agp/isoch.c
index 7ecf20a6d19c..da0d2681225b 100644
--- a/drivers/char/agp/isoch.c
+++ b/drivers/char/agp/isoch.c
@@ -289,6 +289,9 @@ static void agp_3_5_nonisochronous_node_enable(struct agp_bridge_data *bridge,
u32 trq, mrq, rem;
unsigned int cdev = 0;

+ if (ndevs == 0)
+ return;
+
pci_read_config_dword(bridge->dev, bridge->capndx+AGPSTAT, &tstatus);

trq = (tstatus >> 24) & 0xff;
--
2.25.1
\
 
 \ /
  Last update: 2022-05-21 09:40    [W:0.044 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site