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Staging: udlfb: remove printk and small cleanup 

Remove last remaining printk and clarify comments

Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bernie Thompson 2010-02-15 06:46:48 -08:00 committed by Greg Kroah-Hartman
parent dd8015f1c8
commit bd80816b28
1 changed files with 10 additions and 5 deletions
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15
drivers/staging/udlfb/udlfb.c
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@ -83,8 +83,8 @@ static struct fb_deferred_io dlfb_defio;
#endif
/*
* Inserts a specific DisplayLink controller command into the provided
* buffer.
* All DisplayLink bulk operations start with 0xAF, followed by specific code
* All operations are written to buffers which then later get sent to device
*/
static char *dlfb_set_register(char *buf, u8 reg, u8 val)
{
@ -129,6 +129,10 @@ static char *dlfb_set_base16bpp(char *wrptr, u32 base)
return dlfb_set_register(wrptr, 0x22, base);
}
/*
* DisplayLink HW has separate 16bpp and 8bpp framebuffers.
* In 24bpp modes, the low 323 RGB bits go in the 8bpp framebuffer
*/
static char *dlfb_set_base8bpp(char *wrptr, u32 base)
{
wrptr = dlfb_set_register(wrptr, 0x26, base >> 16);
@ -161,7 +165,7 @@ static char *dlfb_set_register_16be(char *wrptr, u8 reg, u16 value)
* same actual count. This makes sense once you read above a couple of
* times and think about it from a hardware perspective.
*/
static u16 lfsr16(u16 actual_count)
static u16 dlfb_lfsr16(u16 actual_count)
{
u32 lv = 0xFFFF; /* This is the lfsr value that the hw starts with */
@ -180,7 +184,7 @@ static u16 lfsr16(u16 actual_count)
*/
static char *dlfb_set_register_lfsr16(char *wrptr, u8 reg, u16 value)
{
return dlfb_set_register_16(wrptr, reg, lfsr16(value));
return dlfb_set_register_16(wrptr, reg, dlfb_lfsr16(value));
}
/*
@ -292,8 +296,9 @@ static int dlfb_ops_mmap(struct fb_info *info, struct vm_area_struct *vma)
unsigned long size = vma->vm_end - vma->vm_start;
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
unsigned long page, pos;
struct dlfb_data *dev = info->par;
printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len);
dl_notice("MMAP: %lu %u\n", offset + size, info->fix.smem_len);
if (offset + size > info->fix.smem_len)
return -EINVAL;