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drm: Use vsnprintf extension %ph

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Using the extension saves a bit of code.

Miscellanea:

o Neaten and simplify dump_dp_payload_table
o Removed trailing blank space from output

$ size drivers/gpu/drm/drm_dp_mst_topology.o.* drivers/gpu/drm/tinydrm/*.o*
   text	   data	    bss	    dec	    hex	filename
  25848	      0	     16	  25864	   6508	drivers/gpu/drm/drm_dp_mst_topology.o.new
  26091	      0	     16	  26107	   65fb	drivers/gpu/drm/drm_dp_mst_topology.o.old
   3362	      2	      0	   3364	    d24	drivers/gpu/drm/tinydrm/mipi-dbi.o.new
   3376	      2	      0	   3378	    d32	drivers/gpu/drm/tinydrm/mipi-dbi.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/a78a21b5f34947da65473a0b7326922cda51a3be.1496187315.git.joe@perches.com
This commit is contained in:
Joe Perches
2017-05-30 16:35:37 -07:00
committed by Daniel Vetter
parent 99cdb35e78
commit 46466b0dac
2 changed files with 18 additions and 40 deletions
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7
drivers/gpu/drm/tinydrm/mipi-dbi.c
View File

@@ -914,7 +914,7 @@ static int mipi_dbi_debugfs_command_show(struct seq_file *m, void *unused)
{
struct mipi_dbi *mipi = m->private;
u8 cmd, val[4];
size_t len, i;
size_t len;
int ret;
for (cmd = 0; cmd < 255; cmd++) {
@@ -943,10 +943,7 @@ static int mipi_dbi_debugfs_command_show(struct seq_file *m, void *unused)
seq_puts(m, "XX\n");
continue;
}
for (i = 0; i < len; i++)
seq_printf(m, "%02x", val[i]);
seq_puts(m, "\n");
seq_printf(m, "%*phN\n", (int)len, val);
}
return 0;