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video: udlfb: Kill off some magic constants for EDID sizing.

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The edid length is fixed, so use the standard definition consistently.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2011-01-06 18:04:02 +09:00
parent 1a3e528cfc
commit b9f03a3cd0
2 changed files with 7 additions and 14 deletions
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15
drivers/video/udlfb.c
View File

@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <video/udlfb.h>
#include "edid.h"
static struct fb_fix_screeninfo dlfb_fix = {
.id = "udlfb",
@ -1169,7 +1170,7 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
if (info->dev) /* only use mutex if info has been registered */
mutex_lock(&info->lock);
edid = kmalloc(MAX_EDID_SIZE, GFP_KERNEL);
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (!edid) {
result = -ENOMEM;
goto error;
@ -1185,9 +1186,9 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
*/
while (tries--) {
i = dlfb_get_edid(dev, edid, MAX_EDID_SIZE);
i = dlfb_get_edid(dev, edid, EDID_LENGTH);
if (i >= MIN_EDID_SIZE)
if (i >= EDID_LENGTH)
fb_edid_to_monspecs(edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
@ -1211,7 +1212,7 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
/* If that fails, use the default EDID we were handed */
if (info->monspecs.modedb_len == 0) {
if (default_edid_size >= MIN_EDID_SIZE) {
if (default_edid_size >= EDID_LENGTH) {
fb_edid_to_monspecs(default_edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
memcpy(edid, default_edid, default_edid_size);
@ -1360,9 +1361,7 @@ static ssize_t edid_store(
struct dlfb_data *dev = fb_info->par;
/* We only support write of entire EDID at once, no offset*/
if ((src_size < MIN_EDID_SIZE) ||
(src_size > MAX_EDID_SIZE) ||
(src_off != 0))
if ((src_size != EDID_LENGTH) || (src_off != 0))
return 0;
dlfb_setup_modes(dev, fb_info, src, src_size);
@ -1393,7 +1392,7 @@ static ssize_t metrics_reset_store(struct device *fbdev,
static struct bin_attribute edid_attr = {
.attr.name = "edid",
.attr.mode = 0666,
.size = MAX_EDID_SIZE,
.size = EDID_LENGTH,
.read = edid_show,
.write = edid_store
};

6
include/video/udlfb.h
View File

@ -65,9 +65,6 @@ struct dlfb_data {
#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
#define WRITES_IN_FLIGHT (4)
#define MIN_EDID_SIZE 128
#define MAX_EDID_SIZE 128
#define MAX_VENDOR_DESCRIPTOR_SIZE 256
#define GET_URB_TIMEOUT HZ
@ -95,9 +92,6 @@ struct dlfb_data {
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
/* remove once this gets added to sysfs.h */
#define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
/*
* udlfb is both a usb device, and a framebuffer device.
* They may exist at the same time, but during various stages