From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/gpu/drm/radeon/rv740_dpm.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/gpu/drm/radeon/rv740_dpm.c b/kernel/drivers/gpu/drm/radeon/rv740_dpm.c
index 327d65a..79b2de6 100644
--- a/kernel/drivers/gpu/drm/radeon/rv740_dpm.c
+++ b/kernel/drivers/gpu/drm/radeon/rv740_dpm.c
@@ -250,8 +250,12 @@
ASIC_INTERNAL_MEMORY_SS, vco_freq)) {
u32 reference_clock = rdev->clock.mpll.reference_freq;
u32 decoded_ref = rv740_get_decoded_reference_divider(dividers.ref_div);
- u32 clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
- u32 clk_v = 0x40000 * ss.percentage *
+ u32 clk_s, clk_v;
+
+ if (!decoded_ref)
+ return -EINVAL;
+ clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
+ clk_v = 0x40000 * ss.percentage *
(dividers.whole_fb_div + (dividers.frac_fb_div / 8)) / (clk_s * 10000);
mpll_ss1 &= ~CLKV_MASK;
--
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