modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/gpu/drm/radeon/rv740_dpm.c
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@@ -22,7 +22,6 @@
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  * Authors: Alex Deucher
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  */
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-#include <drm/drmP.h>
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 #include "radeon.h"
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 #include "rv740d.h"
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 #include "r600_dpm.h"
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@@ -251,8 +250,12 @@
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 						     ASIC_INTERNAL_MEMORY_SS, vco_freq)) {
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 			u32 reference_clock = rdev->clock.mpll.reference_freq;
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 			u32 decoded_ref = rv740_get_decoded_reference_divider(dividers.ref_div);
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-			u32 clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
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-			u32 clk_v = 0x40000 * ss.percentage *
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+			u32 clk_s, clk_v;
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+
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+			if (!decoded_ref)
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+				return -EINVAL;
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+			clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
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+			clk_v = 0x40000 * ss.percentage *
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 				(dividers.whole_fb_div + (dividers.frac_fb_div / 8)) / (clk_s * 10000);
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 			mpll_ss1 &= ~CLKV_MASK;