From: Jia-Ju Bai <baijiaju1990@gmail.com>
Date: Sat, 4 Aug 2018 00:25:35 +0000 (+0800)
Subject: gpu: drm: radeon: cik: Replace mdelay() with msleep() in cik_pcie_gen3_enable()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c51cebb890dc76260c02354882cf333c8207dd19;p=openwrt%2Fstaging%2Fblogic.git

gpu: drm: radeon: cik: Replace mdelay() with msleep() in cik_pcie_gen3_enable()

cik_pcie_gen3_enable() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index ebce4601a305..ab7b4e2ffcd2 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -9600,7 +9600,7 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
 				tmp |= LC_REDO_EQ;
 				WREG32_PCIE_PORT(PCIE_LC_CNTL4, tmp);
 
-				mdelay(100);
+				msleep(100);
 
 				/* linkctl */
 				pci_read_config_word(root, bridge_pos + PCI_EXP_LNKCTL, &tmp16);