linux-kernel - [PATCH 08/31] staging: wfx: use IS

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Message-Id: <20220113085524.1110708-9-Jerome.Pouiller@silabs.com>
Date:   Thu, 13 Jan 2022 09:55:01 +0100
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH 08/31] staging: wfx: use IS_ALIGNED()

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

It "IS_ALIGNED(ptr, 4)" is more explicit than "ptr & 3".

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/bus_sdio.c | 9 +++++----
 drivers/staging/wfx/hwio.c     | 5 +++--
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/wfx/bus_sdio.c b/drivers/staging/wfx/bus_sdio.c
index a670176ba06f..42aeab30bf0a 100644
--- a/drivers/staging/wfx/bus_sdio.c
+++ b/drivers/staging/wfx/bus_sdio.c
@@ -12,6 +12,7 @@
 #include <linux/interrupt.h>
 #include <linux/of_irq.h>
 #include <linux/irq.h>
+#include <linux/align.h>
 
 #include "bus.h"
 #include "wfx.h"
@@ -40,8 +41,8 @@ static int wfx_sdio_copy_from_io(void *priv, unsigned int reg_id,
 	int ret;
 
 	WARN(reg_id > 7, "chip only has 7 registers");
-	WARN(((uintptr_t)dst) & 3, "unaligned buffer size");
-	WARN(count & 3, "unaligned buffer address");
+	WARN(!IS_ALIGNED((uintptr_t)dst, 4), "unaligned buffer address");
+	WARN(!IS_ALIGNED(count, 4), "unaligned buffer size");
 
 	/* Use queue mode buffers */
 	if (reg_id == WFX_REG_IN_OUT_QUEUE)
@@ -61,8 +62,8 @@ static int wfx_sdio_copy_to_io(void *priv, unsigned int reg_id,
 	int ret;
 
 	WARN(reg_id > 7, "chip only has 7 registers");
-	WARN(((uintptr_t)src) & 3, "unaligned buffer size");
-	WARN(count & 3, "unaligned buffer address");
+	WARN(!IS_ALIGNED((uintptr_t)src, 4), "unaligned buffer address");
+	WARN(!IS_ALIGNED(count, 4), "unaligned buffer size");
 
 	/* Use queue mode buffers */
 	if (reg_id == WFX_REG_IN_OUT_QUEUE)
diff --git a/drivers/staging/wfx/hwio.c b/drivers/staging/wfx/hwio.c
index 393bcb1e2f4e..a2a37efc51a6 100644
--- a/drivers/staging/wfx/hwio.c
+++ b/drivers/staging/wfx/hwio.c
@@ -8,6 +8,7 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/align.h>
 
 #include "hwio.h"
 #include "wfx.h"
@@ -221,7 +222,7 @@ int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t len)
 {
 	int ret;
 
-	WARN((long)buf & 3, "%s: unaligned buffer", __func__);
+	WARN(!IS_ALIGNED((uintptr_t)buf, 4), "unaligned buffer");
 	wdev->hwbus_ops->lock(wdev->hwbus_priv);
 	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv,
 					    WFX_REG_IN_OUT_QUEUE, buf, len);
@@ -237,7 +238,7 @@ int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t len)
 {
 	int ret;
 
-	WARN((long)buf & 3, "%s: unaligned buffer", __func__);
+	WARN(!IS_ALIGNED((uintptr_t)buf, 4), "unaligned buffer");
 	wdev->hwbus_ops->lock(wdev->hwbus_priv);
 	ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv,
 					  WFX_REG_IN_OUT_QUEUE, buf, len);
-- 
2.34.1