diff mbox series

i2c: pci1xxxx: prevent signed integer overflow

Message ID 20220928201214.8544-1-wsa@kernel.org
State Accepted
Commit 228336f50711e9f0f47352483a8501e0c598845b
Headers show
Series i2c: pci1xxxx: prevent signed integer overflow | expand

Commit Message

Wolfram Sang Sept. 28, 2022, 8:12 p.m. UTC
Some constants need 'UL' markings, otherwise they are shifted into the
sign bit.

Fixes: 361693697249 ("i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch")
Signed-off-by: Wolfram Sang <wsa@kernel.org>
---
 drivers/i2c/busses/i2c-mchp-pci1xxxx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Wolfram Sang Oct. 1, 2022, 10:59 p.m. UTC | #1
On Wed, Sep 28, 2022 at 10:12:14PM +0200, Wolfram Sang wrote:
> Some constants need 'UL' markings, otherwise they are shifted into the
> sign bit.
> 
> Fixes: 361693697249 ("i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch")
> Signed-off-by: Wolfram Sang <wsa@kernel.org>

Applied to for-next, thanks!
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-mchp-pci1xxxx.c b/drivers/i2c/busses/i2c-mchp-pci1xxxx.c
index b2b7dbff5ef4..f5342201eb6b 100644
--- a/drivers/i2c/busses/i2c-mchp-pci1xxxx.c
+++ b/drivers/i2c/busses/i2c-mchp-pci1xxxx.c
@@ -190,9 +190,9 @@ 
  * Bus Idle Minimum time = BUS_IDLE_MIN[7:0] x Baud_Clock_Period x
  * (BUS_IDLE_MIN_XK_TICKS[7] ? 4,1)
  */
-#define BUS_IDLE_MIN_100K_TICKS		167
-#define BUS_IDLE_MIN_400K_TICKS		139
-#define BUS_IDLE_MIN_1000K_TICKS		133
+#define BUS_IDLE_MIN_100K_TICKS		167UL
+#define BUS_IDLE_MIN_400K_TICKS		139UL
+#define BUS_IDLE_MIN_1000K_TICKS		133UL
 
 /*
  * CTRL_CUM_TIME_OUT_XK_TICKS defines SMBus Controller Cumulative Time-Out.