Messages in this thread Patch in this message | | | From | Chris Ball <> | Subject | Re: A question on printascii | Date | Thu, 19 Jul 2012 23:54:15 -0400 |
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Hi Shashidhar,
On Wed, Jul 18 2012, Shashidhar Hiremath wrote: > I want to use printascii to debug my serial driver. How do I enable > it and use the feature. > Currently I have enabled in menuconfig and done an extern on the > printascii api, this doesn't seem to work, So any hints for debugging > serial drivers ?
Sounds like you want this patch, against linux-next:
diff --git a/kernel/printk.c b/kernel/printk.c index 3991862..36abce8 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -45,6 +45,8 @@ #include <asm/uaccess.h> +extern void printascii(char *); + #define CREATE_TRACE_POINTS #include <trace/events/printk.h> @@ -1542,6 +1544,8 @@ asmlinkage int vprintk_emit(int facility, int level, */ text_len = vscnprintf(text, sizeof(textbuf), fmt, args); + printascii(text); + /* mark and strip a trailing newline */ if (text_len && text[text_len-1] == '\n') { text_len--; -- Chris Ball <cjb@laptop.org> <http://printf.net/> One Laptop Per Child
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