From 9b79594aa470fd5fe2173d281fd604d11ec8e902 Mon Sep 17 00:00:00 2001
From: Jinjie Ruan <ruanjinjie@huawei.com>
Date: Mon, 2 Sep 2024 17:44:04 +0800
Subject: [PATCH] drm/panthor: Use the BITS_PER_LONG macro
sizeof(unsigned long) * 8 is the number of bits in an unsigned long
variable, replace it with BITS_PER_LONG macro to make them simpler.
And fix the warning:
WARNING: Comparisons should place the constant on the right side of the test
#23: FILE: drivers/gpu/drm/panthor/panthor_mmu.c:2696:
+ if (BITS_PER_LONG < va_bits) {
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902094404.1943710-1-ruanjinjie@huawei.com
---
drivers/gpu/drm/panthor/panthor_mmu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/panthor/panthor_mmu.c
index d47972806d506..cd2bac54e7611 100644
--- a/drivers/gpu/drm/panthor/panthor_mmu.c
+++ b/drivers/gpu/drm/panthor/panthor_mmu.c
@@ -2693,9 +2693,9 @@ int panthor_mmu_init(struct panthor_device *ptdev)
* which passes iova as an unsigned long. Patch the mmu_features to reflect this
* limitation.
*/
- if (sizeof(unsigned long) * 8 < va_bits) {
+ if (va_bits > BITS_PER_LONG) {
ptdev->gpu_info.mmu_features &= ~GENMASK(7, 0);
- ptdev->gpu_info.mmu_features |= sizeof(unsigned long) * 8;
+ ptdev->gpu_info.mmu_features |= BITS_PER_LONG;
}
return drmm_add_action_or_reset(&ptdev->base, panthor_mmu_release_wq, mmu->vm.wq);
--
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