linux-kernel - [PATCH] staging: fbtft: force cast to non-_

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Message-Id: <1429205359-12929-1-git-send-email-gdk@google.com>
Date:	Thu, 16 Apr 2015 13:29:19 -0400
From:	Garret Kelly <gdk@...gle.com>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Noralf Trønnes <noralf@...nnes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org (open list:STAGING SUBSYSTEM),
	linux-kernel@...r.kernel.org (open list)
Cc:	Garret Kelly <gdk@...gle.com>
Subject: [PATCH] staging: fbtft: force cast to non-__iomem pointer

fbtft uses fb_info's screen_base field to store a non-__iomem
allocation.  Cast away the __iomem qualifier when freeing the pointer to
suppress the sparse warning.

Fixes the following sparse warnings:
drivers/staging/fbtft/fbtft-core.c:918:19: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/fbtft/fbtft-core.c:918:19:    expected void const *addr
drivers/staging/fbtft/fbtft-core.c:918:19:    got char [noderef] <asn:2>*screen_base

Signed-off-by: Garret Kelly <gdk@...gle.com>
---
 drivers/staging/fbtft/fbtft-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 37dcf7e..1196dda 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -925,7 +925,7 @@ EXPORT_SYMBOL(fbtft_framebuffer_alloc);
 void fbtft_framebuffer_release(struct fb_info *info)
 {
 	fb_deferred_io_cleanup(info);
-	vfree(info->screen_base);
+	vfree((void __force *)info->screen_base);
 	framebuffer_release(info);
 }
 EXPORT_SYMBOL(fbtft_framebuffer_release);
-- 
2.0.2

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