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Date: Sun, 6 Jul 2014 20:56:10 +0200
From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Tomi Valkeinen <tomi.valkeinen@...com>
Cc: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
Jingoo Han <jg1.han@...sung.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Rob Clark <robdclark@...il.com>, linux-fbdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] video: fbdev: riva: riva_hw.c: Cleaning up variable that is never used
Variable ar assigned a value that is never used.
I have also removed all the code that thereby serves no purpose.
This was found using a static code analysis program called cppcheck
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
drivers/video/fbdev/riva/riva_hw.c | 50 ++++++++++--------------------------
1 file changed, 14 insertions(+), 36 deletions(-)
diff --git a/drivers/video/fbdev/riva/riva_hw.c b/drivers/video/fbdev/riva/riva_hw.c
index 78fdbf5..f760749 100644
--- a/drivers/video/fbdev/riva/riva_hw.c
+++ b/drivers/video/fbdev/riva/riva_hw.c
@@ -247,14 +247,13 @@ static int nv3_iterate(nv3_fifo_info *res_info, nv3_sim_state * state, nv3_arb_i
int mburst_size = 32;
int mmisses, gmisses, vmisses;
int misses;
- int vlwm, glwm, mlwm;
+ int vlwm, glwm;
int last, next, cur;
int max_gfsize ;
long ns;
vlwm = 0;
glwm = 0;
- mlwm = 0;
vfsize = 0;
gfsize = 0;
cur = ainfo->cur;
@@ -592,7 +591,7 @@ static void nv3CalcArbitration
ainfo.gr_en = 1;
ainfo.gdrain_rate = (int) state->pclk_khz * (state->pix_bpp/8);
ainfo.vdrain_rate = 0;
- res_gr = nv3_get_param(res_info, state, &ainfo);
+ nv3_get_param(res_info, state, &ainfo);
res_gr = ainfo.converged;
res_info->video_lwm = save_info.video_lwm;
res_info->video_burst_size = save_info.video_burst_size;
@@ -602,7 +601,7 @@ static void nv3CalcArbitration
{
if (!ainfo.gr_en) ainfo.gdrain_rate = 0;
if (!ainfo.vid_en) ainfo.vdrain_rate = 0;
- res_gr = nv3_get_param(res_info, state, &ainfo);
+ nv3_get_param(res_info, state, &ainfo);
res_info->valid = ainfo.converged;
}
}
@@ -657,13 +656,12 @@ static void nv4CalcArbitration
nv4_sim_state *arb
)
{
- int data, pagemiss, cas,width, video_enable, color_key_enable, bpp, align;
- int nvclks, mclks, pclks, vpagemiss, crtpagemiss, vbs;
+ int data, pagemiss, cas, width, video_enable, bpp;
+ int nvclks, mclks, vpagemiss, crtpagemiss, vbs;
int found, mclk_extra, mclk_loop, cbs, m1, p1;
int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
int us_m, us_n, us_p, video_drain_rate, crtc_drain_rate;
int vpm_us, us_video, vlwm, video_fill_us, cpm_us, us_crt,clwm;
- int craw, vraw;
fifo->valid = 1;
pclk_freq = arb->pclk_khz;
@@ -673,14 +671,11 @@ static void nv4CalcArbitration
cas = arb->mem_latency;
width = arb->memory_width >> 6;
video_enable = arb->enable_video;
- color_key_enable = arb->gr_during_vid;
bpp = arb->pix_bpp;
- align = arb->mem_aligned;
mp_enable = arb->enable_mp;
clwm = 0;
vlwm = 0;
cbs = 128;
- pclks = 2;
nvclks = 2;
nvclks += 2;
nvclks += 1;
@@ -700,7 +695,6 @@ static void nv4CalcArbitration
if (mp_enable)
mclks+=4;
nvclks += 0;
- pclks += 0;
found = 0;
vbs = 0;
while (found != 1)
@@ -783,8 +777,6 @@ static void nv4CalcArbitration
mclk_extra--;
}
}
- craw = clwm;
- vraw = vlwm;
if (clwm < 384) clwm = 384;
if (vlwm < 128) vlwm = 128;
data = (int)(clwm);
@@ -843,17 +835,17 @@ static void nv10CalcArbitration
nv10_sim_state *arb
)
{
- int data, pagemiss, cas,width, video_enable, color_key_enable, bpp, align;
- int nvclks, mclks, pclks, vpagemiss, crtpagemiss, vbs;
- int nvclk_fill, us_extra;
+ int data, pagemiss, width, video_enable, bpp;
+ int nvclks, mclks, pclks, vpagemiss, crtpagemiss;
+ int nvclk_fill;
int found, mclk_extra, mclk_loop, cbs, m1;
int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
- int us_m, us_m_min, us_n, us_p, video_drain_rate, crtc_drain_rate;
- int vus_m, vus_n, vus_p;
- int vpm_us, us_video, vlwm, cpm_us, us_crt,clwm;
+ int us_m, us_m_min, us_n, us_p, crtc_drain_rate;
+ int vus_m;
+ int vpm_us, us_video, cpm_us, us_crt, clwm;
int clwm_rnd_down;
- int craw, m2us, us_pipe, us_pipe_min, vus_pipe, p1clk, p2;
- int pclks_2_top_fifo, min_mclk_extra;
+ int m2us, us_pipe_min, p1clk, p2;
+ int min_mclk_extra;
int us_min_mclk_extra;
fifo->valid = 1;
@@ -861,18 +853,13 @@ static void nv10CalcArbitration
mclk_freq = arb->mclk_khz;
nvclk_freq = arb->nvclk_khz;
pagemiss = arb->mem_page_miss;
- cas = arb->mem_latency;
width = arb->memory_width/64;
video_enable = arb->enable_video;
- color_key_enable = arb->gr_during_vid;
bpp = arb->pix_bpp;
- align = arb->mem_aligned;
mp_enable = arb->enable_mp;
clwm = 0;
- vlwm = 1024;
cbs = 512;
- vbs = 512;
pclks = 4; /* lwm detect. */
@@ -933,17 +920,11 @@ static void nv10CalcArbitration
us_min_mclk_extra = min_mclk_extra *1000*1000 / mclk_freq;
us_n = nvclks*1000*1000 / nvclk_freq;/* nvclk latency in us */
us_p = pclks*1000*1000 / pclk_freq;/* nvclk latency in us */
- us_pipe = us_m + us_n + us_p;
us_pipe_min = us_m_min + us_n + us_p;
- us_extra = 0;
vus_m = mclk_loop *1000*1000 / mclk_freq; /* Mclk latency in us */
- vus_n = (4)*1000*1000 / nvclk_freq;/* nvclk latency in us */
- vus_p = 0*1000*1000 / pclk_freq;/* pclk latency in us */
- vus_pipe = vus_m + vus_n + vus_p;
if(video_enable) {
- video_drain_rate = pclk_freq * 4; /* MB/s */
crtc_drain_rate = pclk_freq * bpp/8; /* MB/s */
vpagemiss = 1; /* self generating page miss */
@@ -1002,7 +983,6 @@ static void nv10CalcArbitration
else if(crtc_drain_rate * 100 >= nvclk_fill * 98) {
clwm = 1024;
cbs = 512;
- us_extra = (cbs * 1000 * 1000)/ (8*width)/mclk_freq ;
}
}
}
@@ -1019,7 +999,6 @@ static void nv10CalcArbitration
m1 = clwm + cbs - 1024; /* Amount of overfill */
m2us = us_pipe_min + us_min_mclk_extra;
- pclks_2_top_fifo = (1024-clwm)/(8*width);
/* pclk cycles to drain */
p1clk = m2us * pclk_freq/(1000*1000);
@@ -1047,7 +1026,6 @@ static void nv10CalcArbitration
min_mclk_extra--;
}
}
- craw = clwm;
if(clwm < (1024-cbs+8)) clwm = 1024-cbs+8;
data = (int)(clwm);
@@ -1863,7 +1841,7 @@ static void SetStartAddress3
/*
* 4 pixel pan register.
*/
- offset = VGA_RD08(chip->PCIO, chip->IO + 0x0A);
+ VGA_RD08(chip->PCIO, chip->IO + 0x0A);
VGA_WR08(chip->PCIO, 0x3C0, 0x13);
VGA_WR08(chip->PCIO, 0x3C0, pan);
}
--
1.7.10.4
--
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