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[RESEND,v2,5/9] arc: Constify ioreadX() iomem argument (as in generic implementation)

Message ID 20200219175007.13627-6-krzk@kernel.org (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series iomap: Constify ioreadX() iomem argument | expand

Commit Message

Krzysztof Kozlowski Feb. 19, 2020, 5:50 p.m. UTC 
The ioreadX() helpers have inconsistent interface.  On some architectures
void *__iomem address argument is a pointer to const, on some not.

Implementations of ioreadX() do not modify the memory under the
address so they can be converted to a "const" version for const-safety
and consistency among architectures.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>

---

Changes since v1:
1. Add Alexey's ack.
---
 arch/arc/plat-axs10x/axs10x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index 63ea5a606ecd..180c260a8221 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -84,7 +84,7 @@  static void __init axs10x_print_board_ver(unsigned int creg, const char *str)
 		unsigned int val;
 	} board;
 
-	board.val = ioread32((void __iomem *)creg);
+	board.val = ioread32((const void __iomem *)creg);
 	pr_info("AXS: %s FPGA Date: %u-%u-%u\n", str, board.d, board.m,
 		board.y);
 }
@@ -95,7 +95,7 @@  static void __init axs10x_early_init(void)
 	char mb[32];
 
 	/* Determine motherboard version */
-	if (ioread32((void __iomem *) CREG_MB_CONFIG) & (1 << 28))
+	if (ioread32((const void __iomem *) CREG_MB_CONFIG) & (1 << 28))
 		mb_rev = 3;	/* HT-3 (rev3.0) */
 	else
 		mb_rev = 2;	/* HT-2 (rev2.0) */