Re: [RFC: PATCH] err.h: silence warning when using IS_ERR on void__iomem *

From: Sachin Kamat
Date: Thu Jun 13 2013 - 01:25:33 EST

On 13 June 2013 03:01, Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> wrote:
> Commit 75096579c3ac ("lib: devres: Introduce devm_ioremap_resource()")
> introduced devm_ioremap_resource() and encourage to check its return value with
> IS_ERR(). This however leads to the following sparse warnings, as
> devm_ioremap_resource() returns a void __iomem pointer:
> drivers/net/can/c_can/c_can_platform.c:205:32: warning: incorrect type in argument 1 (different address spaces)
> drivers/net/can/c_can/c_can_platform.c:205:32: expected void const *ptr
> drivers/net/can/c_can/c_can_platform.c:205:32: got unsigned int [noderef] [usertype] <asn:2>*raminit_ctrlreg

CC ing Thierry who has solved this issue some time back.

With warm regards,
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