From: Oleksandr Tyshchenko Date: Mon, 11 Jan 2021 10:33:55 +0000 (+0200) Subject: iommu/arm: ipmmu-vmsa: Use 1U << 31 rather than 1 << 31 X-Git-Tag: archive/raspbian/4.16.0+51-g0941d6cb-1+rpi1~2^2~42^2~1164 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=0e97d99f0e9fc627f29680d20d2619184c894f14;p=xen.git iommu/arm: ipmmu-vmsa: Use 1U << 31 rather than 1 << 31 Replace all the use of 1 << 31 with 1U << 31 to prevent undefined behavior in the IPMMU-VMSA driver. Signed-off-by: Oleksandr Tyshchenko Reviewed-by: Stefano Stabellini --- diff --git a/xen/drivers/passthrough/arm/ipmmu-vmsa.c b/xen/drivers/passthrough/arm/ipmmu-vmsa.c index 346165c3fa..aef358d880 100644 --- a/xen/drivers/passthrough/arm/ipmmu-vmsa.c +++ b/xen/drivers/passthrough/arm/ipmmu-vmsa.c @@ -187,7 +187,7 @@ static DEFINE_SPINLOCK(ipmmu_devices_lock); #define IMCAAR 0x0004 #define IMTTBCR 0x0008 -#define IMTTBCR_EAE (1 << 31) +#define IMTTBCR_EAE (1U << 31) #define IMTTBCR_PMB (1 << 30) #define IMTTBCR_SH1_NON_SHAREABLE (0 << 28) #define IMTTBCR_SH1_OUTER_SHAREABLE (2 << 28) @@ -251,7 +251,7 @@ static DEFINE_SPINLOCK(ipmmu_devices_lock); #define IMUCTR(n) ((n) < 32 ? IMUCTR0(n) : IMUCTR32(n)) #define IMUCTR0(n) (0x0300 + ((n) * 16)) #define IMUCTR32(n) (0x0600 + (((n) - 32) * 16)) -#define IMUCTR_FIXADDEN (1 << 31) +#define IMUCTR_FIXADDEN (1U << 31) #define IMUCTR_FIXADD_MASK (0xff << 16) #define IMUCTR_FIXADD_SHIFT 16 #define IMUCTR_TTSEL_MMU(n) ((n) << 4)