diff --git a/drivers/misc/tsu6721.c b/drivers/misc/tsu6721.c
index a38894eb992..89c3fadf8f0 100644
--- a/drivers/misc/tsu6721.c
+++ b/drivers/misc/tsu6721.c
@@ -51,7 +51,7 @@
 extern int spmi_ext_register_writel_extra(u8 sid, u16 ad, u8 *buf, int len);
 extern int spmi_ext_register_readl_extra(u8 sid, u16 ad, u8 *buf, int len);
 
-extern int system_rev;
+extern unsigned int system_rev;
 
 #define INT_MASK1		0x5C
 #define INT_MASK2		0x20
diff --git a/drivers/motor/msm_vibrator.c b/drivers/motor/msm_vibrator.c
index d8a01eadeda..57fc260b561 100644
--- a/drivers/motor/msm_vibrator.c
+++ b/drivers/motor/msm_vibrator.c
@@ -126,7 +126,7 @@ static int msm_vibrator_suspend(struct device *dev)
 #endif
 
 static SIMPLE_DEV_PM_OPS(vibrator_pm_ops, msm_vibrator_suspend, NULL);
-extern int system_rev;
+extern unsigned int system_rev;
 extern int expander_gpio_config(unsigned config, unsigned disable);
 static int msm_vibrator_probe(struct platform_device *pdev)
 {
diff --git a/sound/soc/codecs/wcd9306.c b/sound/soc/codecs/wcd9306.c
index e26de53a706..ba50eb4165e 100644
--- a/sound/soc/codecs/wcd9306.c
+++ b/sound/soc/codecs/wcd9306.c
@@ -6044,7 +6044,7 @@ static void tapan_init_slim_slave_cfg(struct snd_soc_codec *codec)
 	pr_debug("%s: slimbus logical address 0x%llx\n", __func__, eaddr);
 }
 
-extern int system_rev;
+extern unsigned int system_rev;
 static void tapan_codec_init_reg(struct snd_soc_codec *codec)
 {
 	u32 i;