linux-kernel - [PATCH -next] drm: simpledrm: print resource info using '%pr'

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Message-Id: <20210512233459.19534-1-rdunlap@infradead.org>
Date:   Wed, 12 May 2021 16:34:59 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH -next] drm: simpledrm: print resource info using '%pr'

struct resource start and end fields are not always long long,
so using %llx to print them can cause build warnings (below).
Fix these by using the special "%pr" for printing struct resource info.

../drivers/gpu/drm/tiny/simpledrm.c: In function ‘simpledrm_device_init_mm’:
../include/drm/drm_print.h:412:32: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘resource_size_t {aka unsigned int}’ [-Wformat=]
../drivers/gpu/drm/tiny/simpledrm.c:533:54: note: format string is defined here
   drm_err(dev, "could not acquire memory range [0x%llx:0x%llx]: error %d\n",
                                                   ~~~^
                                                   %x
../include/drm/drm_print.h:412:32: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘resource_size_t {aka unsigned int}’ [-Wformat=]
../drivers/gpu/drm/tiny/simpledrm.c:533:61: note: format string is defined here
   drm_err(dev, "could not acquire memory range [0x%llx:0x%llx]: error %d\n",
                                                          ~~~^
                                                          %x

Fixes: 4aae79f77e3a ("drm/simpledrm: Acquire memory aperture for framebuffer")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: dri-devel@...ts.freedesktop.org
---
 drivers/gpu/drm/tiny/simpledrm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20210512.orig/drivers/gpu/drm/tiny/simpledrm.c
+++ linux-next-20210512/drivers/gpu/drm/tiny/simpledrm.c
@@ -530,8 +530,8 @@ static int simpledrm_device_init_mm(stru
 
 	ret = devm_aperture_acquire_from_firmware(dev, mem->start, resource_size(mem));
 	if (ret) {
-		drm_err(dev, "could not acquire memory range [0x%llx:0x%llx]: error %d\n",
-			mem->start, mem->end, ret);
+		drm_err(dev, "could not acquire memory range %pr: error %d\n",
+			mem, ret);
 		return ret;
 	}