linux-kernel - [PATCH v3] staging: gasket: Fix sparse "incorrect type in assignment" warnings.

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Date:   Wed, 10 Oct 2018 22:24:26 +0100
From:   Laurence Rochfort <laurence.rochfort@...il.com>
To:     Rob Springer <rspringer@...gle.com>,
        Todd Poynor <toddpoynor@...gle.com>,
        Ben Chan <benchan@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Cc:     Laurence Rochfort <laurence.rochfort@...il.com>
Subject: [PATCH v3] staging: gasket: Fix sparse "incorrect type in assignment" warnings.

Remove the coherent buffer __iomem cookie because the buffer is
allocated from dma_alloc_coherent().

warning: incorrect type in assignment (different address spaces)
   expected unsigned char [noderef] [usertype] <asn:2>*virt_base
   got void *[assigned] mem
warning: incorrect type in argument 3 (different address spaces)
   expected void *cpu_addr
   got unsigned char [noderef] [usertype] <asn:2>*virt_base

Signed-off-by: Laurence Rochfort <laurence.rochfort@...il.com>
---
Changes in v3:
 - Just remove the __iommem cookie, don't alter type.

 drivers/staging/gasket/gasket_core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_core.h b/drivers/staging/gasket/gasket_core.h
index 275fd0b..e62adcd 100644
--- a/drivers/staging/gasket/gasket_core.h
+++ b/drivers/staging/gasket/gasket_core.h
@@ -231,7 +231,7 @@ struct gasket_coherent_buffer_desc {
 /* Coherent buffer structure. */
 struct gasket_coherent_buffer {
 	/* Virtual base address. */
-	u8 __iomem *virt_base;
+	u8 *virt_base;
 
 	/* Physical base address. */
 	ulong phys_base;
-- 
2.9.5