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video: Show an error when a vidconsole function fails

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At present these functions fail silently even when debugging, which is not
very helpful. Add a way to print a message to the serial output when an
error is detected.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-02 21:12:14 -06:00 • committed by Bin Meng
parent 493a4c8af7
commit 8b763dfdee
1 changed files with 19 additions and 3 deletions
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22
drivers/video/vidconsole-uclass.c
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@ -9,12 +9,13 @@
#include <common.h> #include <common.h>
#include <command.h> #include <command.h>
#include <console.h>
#include <log.h> #include <log.h>
#include <linux/ctype.h>
#include <dm.h> #include <dm.h>
#include <video.h> #include <video.h>
#include <video_console.h> #include <video_console.h>
#include <video_font.h> /* Bitmap font for code page 437 */ #include <video_font.h> /* Bitmap font for code page 437 */
#include <linux/ctype.h>
/* /*
* Structure to describe a console color * Structure to describe a console color
@ -556,16 +557,31 @@ int vidconsole_put_string(struct udevice *dev, const char *str)
static void vidconsole_putc(struct stdio_dev *sdev, const char ch) static void vidconsole_putc(struct stdio_dev *sdev, const char ch)
{ {
struct udevice *dev = sdev->priv; struct udevice *dev = sdev->priv;
int ret;
vidconsole_put_char(dev, ch); ret = vidconsole_put_char(dev, ch);
if (ret) {
#ifdef DEBUG
console_puts_select_stderr(true, "[vc err: putc]");
#endif
}
video_sync(dev->parent, false); video_sync(dev->parent, false);
} }
static void vidconsole_puts(struct stdio_dev *sdev, const char *s) static void vidconsole_puts(struct stdio_dev *sdev, const char *s)
{ {
struct udevice *dev = sdev->priv; struct udevice *dev = sdev->priv;
int ret;
vidconsole_put_string(dev, s); ret = vidconsole_put_string(dev, s);
if (ret) {
#ifdef DEBUG
char str[30];
snprintf(str, sizeof(str), "[vc err: puts %d]", ret);
console_puts_select_stderr(true, str);
#endif
}
video_sync(dev->parent, false); video_sync(dev->parent, false);
} }