linux-kernel - Re: [PATCH] avoid compiler warnings

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Message-Id: <200611161238.kAGCcaKD017608@harpo.it.uu.se>
Date:	Thu, 16 Nov 2006 13:38:36 +0100 (MET)
From:	Mikael Pettersson <mikpe@...uu.se>
To:	jbeulich@...ell.com, linux-acpi@...el.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] avoid compiler warnings

On Wed, 15 Nov 2006 16:47:59 +0000, Jan Beulich wrote:
> >>Pointers should not be casted to u32 as this results in compiler warnings
> >>on 64-bit platforms.
> >
> >NAK. Use "%p" for formatting pointers. No casts needed.
> 
> Indeed, how did I not see this... While at this, I saw that there were a few
> more instances that needed fixing (they weren't actively generating warnings
> because of the build settings).

Tested on x86-64 and i386, and it did kill the warnings w/o noticeable regressions.

However, for some reason (config settings?) you didn't fix the two cast warnings
in utdebug.c; the appended patch fixes them too.

Signed-off-by: Mikael Pettersson <mikpe@...uu.se>

--- linux-2.6.19-rc5/drivers/acpi/utilities/utdebug.c.~1~	2006-09-20 19:28:46.000000000 +0200
+++ linux-2.6.19-rc5/drivers/acpi/utilities/utdebug.c	2006-11-15 21:22:27.000000000 +0100
@@ -180,8 +180,8 @@ acpi_ut_debug_print(u32 requested_debug_
 	if (thread_id != acpi_gbl_prev_thread_id) {
 		if (ACPI_LV_THREADS & acpi_dbg_level) {
 			acpi_os_printf
-			    ("\n**** Context Switch from TID %X to TID %X ****\n\n",
-			     (u32) acpi_gbl_prev_thread_id, (u32) thread_id);
+			    ("\n**** Context Switch from TID %p to TID %p ****\n\n",
+			     acpi_gbl_prev_thread_id, thread_id);
 		}
 
 		acpi_gbl_prev_thread_id = thread_id;
-
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