linux-kernel - [PATCH v2 3/3] FIRMWARE: bcm47xx_nvram: Use __ioread32

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Date:	Thu, 17 Sep 2015 12:02:11 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Andy Gross <agross@...eaurora.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Hauke Mehrtens <hauke@...ke-m.de>,
	Rafał Miłecki <zajec5@...il.com>,
	Paul Walmsley <paul@...an.com>, linux-mips@...ux-mips.org
Subject: [PATCH v2 3/3] FIRMWARE: bcm47xx_nvram: Use __ioread32_copy() instead of open-coding

Now that we have a generic library function for this, replace the
open-coded instance.

Cc: Hauke Mehrtens <hauke@...ke-m.de>
Cc: Rafał Miłecki <zajec5@...il.com>
Cc: Paul Walmsley <paul@...an.com>
Cc: linux-mips@...ux-mips.org
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
---
 drivers/firmware/broadcom/bcm47xx_nvram.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/firmware/broadcom/bcm47xx_nvram.c b/drivers/firmware/broadcom/bcm47xx_nvram.c
index e41594510b97..8f46e6e394b1 100644
--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
@@ -56,9 +56,7 @@ static u32 find_nvram_size(void __iomem *end)
 static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
 {
 	struct nvram_header __iomem *header;
-	int i;
 	u32 off;
-	u32 *src, *dst;
 	u32 size;
 
 	if (nvram_len) {
@@ -95,10 +93,7 @@ static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
 	return -ENXIO;
 
 found:
-	src = (u32 *)header;
-	dst = (u32 *)nvram_buf;
-	for (i = 0; i < sizeof(struct nvram_header); i += 4)
-		*dst++ = __raw_readl(src++);
+	__ioread32_copy(nvram_buf, header, sizeof(*header) / 4);
 	header = (struct nvram_header *)nvram_buf;
 	nvram_len = header->len;
 	if (nvram_len > size) {
@@ -111,8 +106,8 @@ found:
 		nvram_len = NVRAM_SPACE - 1;
 	}
 	/* proceed reading data after header */
-	for (; i < nvram_len; i += 4)
-		*dst++ = readl(src++);
+	__ioread32_copy(nvram_buf + sizeof(*header), header + 1,
+			DIV_ROUND_UP(nvram_len / 4));
 	nvram_buf[NVRAM_SPACE - 1] = '\0';
 
 	return 0;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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