[PATCH] i2c: pci1xxxx: prevent signed integer overflow

Wolfram Sang
2022-09-28T20:13:06Z

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(-)

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.
--
2.35.1