diff mbox series

[v2,9/9] net: wireless: ath5k: Constify ioreadX() iomem argument (as in generic implementation)

Message ID 20200108200528.4614-10-krzk@kernel.org (mailing list archive)
State New, archived
Headers show
Series iomap: Constify ioreadX() iomem argument | expand

Commit Message

Krzysztof Kozlowski Jan. 8, 2020, 8:05 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>
---
 drivers/net/wireless/ath/ath5k/ahb.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Kalle Valo Jan. 10, 2020, 1:33 p.m. UTC | #1 
Krzysztof Kozlowski <krzk@kernel.org> writes:

> 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>
> ---
>  drivers/net/wireless/ath/ath5k/ahb.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

No need to have "net: wireless: " in the title, otherwise looks good.

Acked-by: Kalle Valo <kvalo@codeaurora.org>
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath5k/ahb.c b/drivers/net/wireless/ath/ath5k/ahb.c
index 2c9cec8b53d9..8bd01df369fb 100644
--- a/drivers/net/wireless/ath/ath5k/ahb.c
+++ b/drivers/net/wireless/ath/ath5k/ahb.c
@@ -138,18 +138,18 @@  static int ath_ahb_probe(struct platform_device *pdev)
 
 	if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
 		/* Enable WMAC AHB arbitration */
-		reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+		reg = ioread32((const void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 		reg |= AR5K_AR2315_AHB_ARB_CTL_WLAN;
 		iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 
 		/* Enable global WMAC swapping */
-		reg = ioread32((void __iomem *) AR5K_AR2315_BYTESWAP);
+		reg = ioread32((const void __iomem *) AR5K_AR2315_BYTESWAP);
 		reg |= AR5K_AR2315_BYTESWAP_WMAC;
 		iowrite32(reg, (void __iomem *) AR5K_AR2315_BYTESWAP);
 	} else {
 		/* Enable WMAC DMA access (assuming 5312 or 231x*/
 		/* TODO: check other platforms */
-		reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
+		reg = ioread32((const void __iomem *) AR5K_AR5312_ENABLE);
 		if (to_platform_device(ah->dev)->id == 0)
 			reg |= AR5K_AR5312_ENABLE_WLAN0;
 		else
@@ -202,12 +202,12 @@  static int ath_ahb_remove(struct platform_device *pdev)
 
 	if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
 		/* Disable WMAC AHB arbitration */
-		reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+		reg = ioread32((const void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 		reg &= ~AR5K_AR2315_AHB_ARB_CTL_WLAN;
 		iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 	} else {
 		/*Stop DMA access */
-		reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
+		reg = ioread32((const void __iomem *) AR5K_AR5312_ENABLE);
 		if (to_platform_device(ah->dev)->id == 0)
 			reg &= ~AR5K_AR5312_ENABLE_WLAN0;
 		else