diff mbox series

[v2] media: nxp: imx8-isi: fix buiding on 32-bit

Message ID 20230418061155.2923515-1-arnd@kernel.org (mailing list archive)
State New, archived
Headers show
Series [v2] media: nxp: imx8-isi: fix buiding on 32-bit | expand

Commit Message

Arnd Bergmann April 18, 2023, 6:11 a.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

The #if check is wrong, leading to a build failure:

drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c: In function 'mxc_isi_channel_set_inbuf':
drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:33:5: error: "CONFIG_ARCH_DMA_ADDR_T_64BIT" is not defined, evaluates to 0 [-Werror=undef]
   33 | #if CONFIG_ARCH_DMA_ADDR_T_64BIT
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

This could just be an #ifdef, but it seems nicer to just remove
the check entirely. Apparently the only reason for the #ifdef
is to avoid another warning:

drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:55:24: error: right shift count >= width of type [-Werror=shift-count-overflow]

But this is best avoided by using the lower_32_bits()/upper_32_bits()
helpers.

Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: whitespace fixup
---
 .../media/platform/nxp/imx8-isi/imx8-isi-hw.c | 41 ++++++++++---------
 1 file changed, 21 insertions(+), 20 deletions(-)

Comments

Laurent Pinchart April 18, 2023, 6:47 a.m. UTC | #1 
Hi Arnd,

Thank you for the patch.

On Tue, Apr 18, 2023 at 08:11:43AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The #if check is wrong, leading to a build failure:
> 
> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c: In function 'mxc_isi_channel_set_inbuf':
> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:33:5: error: "CONFIG_ARCH_DMA_ADDR_T_64BIT" is not defined, evaluates to 0 [-Werror=undef]
>    33 | #if CONFIG_ARCH_DMA_ADDR_T_64BIT
>       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> This could just be an #ifdef, but it seems nicer to just remove
> the check entirely. Apparently the only reason for the #ifdef
> is to avoid another warning:
> 
> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:55:24: error: right shift count >= width of type [-Werror=shift-count-overflow]
> 
> But this is best avoided by using the lower_32_bits()/upper_32_bits()
> helpers.
> 
> Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Mauro, could you please pick this up for v6.4 ?

> ---
> v2: whitespace fixup
> ---
>  .../media/platform/nxp/imx8-isi/imx8-isi-hw.c | 41 ++++++++++---------
>  1 file changed, 21 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
> index db538f3d88ec..19e80b95ffea 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
> @@ -29,11 +29,10 @@ static inline void mxc_isi_write(struct mxc_isi_pipe *pipe, u32 reg, u32 val)
>  
>  void mxc_isi_channel_set_inbuf(struct mxc_isi_pipe *pipe, dma_addr_t dma_addr)
>  {
> -	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, dma_addr);
> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
> +	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, lower_32_bits(dma_addr));
>  	if (pipe->isi->pdata->has_36bit_dma)
> -		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR, dma_addr >> 32);
> -#endif
> +		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR,
> +			      upper_32_bits(dma_addr));
>  }
>  
>  void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
> @@ -45,34 +44,36 @@ void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
>  	val = mxc_isi_read(pipe, CHNL_OUT_BUF_CTRL);
>  
>  	if (buf_id == MXC_ISI_BUF1) {
> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y, dma_addrs[0]);
> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U, dma_addrs[1]);
> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V, dma_addrs[2]);
> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y,
> +			      lower_32_bits(dma_addrs[0]));
> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U,
> +			      lower_32_bits(dma_addrs[1]));
> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V,
> +			      lower_32_bits(dma_addrs[2]));
>  		if (pipe->isi->pdata->has_36bit_dma) {
>  			mxc_isi_write(pipe, CHNL_Y_BUF1_XTND_ADDR,
> -				      dma_addrs[0] >> 32);
> +				      upper_32_bits(dma_addrs[0]));
>  			mxc_isi_write(pipe, CHNL_U_BUF1_XTND_ADDR,
> -				      dma_addrs[1] >> 32);
> +				      upper_32_bits(dma_addrs[1]));
>  			mxc_isi_write(pipe, CHNL_V_BUF1_XTND_ADDR,
> -				      dma_addrs[2] >> 32);
> +				      upper_32_bits(dma_addrs[2]));
>  		}
> -#endif
>  		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF1_ADDR;
>  	} else  {
> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y, dma_addrs[0]);
> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U, dma_addrs[1]);
> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V, dma_addrs[2]);
> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y,
> +			      lower_32_bits(dma_addrs[0]));
> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U,
> +			      lower_32_bits(dma_addrs[1]));
> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V,
> +			      lower_32_bits(dma_addrs[2]));
>  		if (pipe->isi->pdata->has_36bit_dma) {
>  			mxc_isi_write(pipe, CHNL_Y_BUF2_XTND_ADDR,
> -				      dma_addrs[0] >> 32);
> +				      upper_32_bits(dma_addrs[0]));
>  			mxc_isi_write(pipe, CHNL_U_BUF2_XTND_ADDR,
> -				      dma_addrs[1] >> 32);
> +				      upper_32_bits(dma_addrs[1]));
>  			mxc_isi_write(pipe, CHNL_V_BUF2_XTND_ADDR,
> -				      dma_addrs[2] >> 32);
> +				      upper_32_bits(dma_addrs[2]));
>  		}
> -#endif
>  		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF2_ADDR;
>  	}
>
Hans Verkuil April 18, 2023, 6:52 a.m. UTC | #2 
Hi Laurent, Mauro,

On 18/04/2023 08:47, Laurent Pinchart wrote:
> Hi Arnd,
> 
> Thank you for the patch.
> 
> On Tue, Apr 18, 2023 at 08:11:43AM +0200, Arnd Bergmann wrote:
>> From: Arnd Bergmann <arnd@arndb.de>
>>
>> The #if check is wrong, leading to a build failure:
>>
>> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c: In function 'mxc_isi_channel_set_inbuf':
>> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:33:5: error: "CONFIG_ARCH_DMA_ADDR_T_64BIT" is not defined, evaluates to 0 [-Werror=undef]
>>    33 | #if CONFIG_ARCH_DMA_ADDR_T_64BIT
>>       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> This could just be an #ifdef, but it seems nicer to just remove
>> the check entirely. Apparently the only reason for the #ifdef
>> is to avoid another warning:
>>
>> drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c:55:24: error: right shift count >= width of type [-Werror=shift-count-overflow]
>>
>> But this is best avoided by using the lower_32_bits()/upper_32_bits()
>> helpers.
>>
>> Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> 
> Mauro, could you please pick this up for v6.4 ?

I'll pick this one up, I have three rcar-vin fixes as well that slipped to the cracks
and that need to go in.

Regards,

	Hans

> 
>> ---
>> v2: whitespace fixup
>> ---
>>  .../media/platform/nxp/imx8-isi/imx8-isi-hw.c | 41 ++++++++++---------
>>  1 file changed, 21 insertions(+), 20 deletions(-)
>>
>> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
>> index db538f3d88ec..19e80b95ffea 100644
>> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
>> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
>> @@ -29,11 +29,10 @@ static inline void mxc_isi_write(struct mxc_isi_pipe *pipe, u32 reg, u32 val)
>>  
>>  void mxc_isi_channel_set_inbuf(struct mxc_isi_pipe *pipe, dma_addr_t dma_addr)
>>  {
>> -	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, dma_addr);
>> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
>> +	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, lower_32_bits(dma_addr));
>>  	if (pipe->isi->pdata->has_36bit_dma)
>> -		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR, dma_addr >> 32);
>> -#endif
>> +		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR,
>> +			      upper_32_bits(dma_addr));
>>  }
>>  
>>  void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
>> @@ -45,34 +44,36 @@ void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
>>  	val = mxc_isi_read(pipe, CHNL_OUT_BUF_CTRL);
>>  
>>  	if (buf_id == MXC_ISI_BUF1) {
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y, dma_addrs[0]);
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U, dma_addrs[1]);
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V, dma_addrs[2]);
>> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y,
>> +			      lower_32_bits(dma_addrs[0]));
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U,
>> +			      lower_32_bits(dma_addrs[1]));
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V,
>> +			      lower_32_bits(dma_addrs[2]));
>>  		if (pipe->isi->pdata->has_36bit_dma) {
>>  			mxc_isi_write(pipe, CHNL_Y_BUF1_XTND_ADDR,
>> -				      dma_addrs[0] >> 32);
>> +				      upper_32_bits(dma_addrs[0]));
>>  			mxc_isi_write(pipe, CHNL_U_BUF1_XTND_ADDR,
>> -				      dma_addrs[1] >> 32);
>> +				      upper_32_bits(dma_addrs[1]));
>>  			mxc_isi_write(pipe, CHNL_V_BUF1_XTND_ADDR,
>> -				      dma_addrs[2] >> 32);
>> +				      upper_32_bits(dma_addrs[2]));
>>  		}
>> -#endif
>>  		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF1_ADDR;
>>  	} else  {
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y, dma_addrs[0]);
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U, dma_addrs[1]);
>> -		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V, dma_addrs[2]);
>> -#if CONFIG_ARCH_DMA_ADDR_T_64BIT
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y,
>> +			      lower_32_bits(dma_addrs[0]));
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U,
>> +			      lower_32_bits(dma_addrs[1]));
>> +		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V,
>> +			      lower_32_bits(dma_addrs[2]));
>>  		if (pipe->isi->pdata->has_36bit_dma) {
>>  			mxc_isi_write(pipe, CHNL_Y_BUF2_XTND_ADDR,
>> -				      dma_addrs[0] >> 32);
>> +				      upper_32_bits(dma_addrs[0]));
>>  			mxc_isi_write(pipe, CHNL_U_BUF2_XTND_ADDR,
>> -				      dma_addrs[1] >> 32);
>> +				      upper_32_bits(dma_addrs[1]));
>>  			mxc_isi_write(pipe, CHNL_V_BUF2_XTND_ADDR,
>> -				      dma_addrs[2] >> 32);
>> +				      upper_32_bits(dma_addrs[2]));
>>  		}
>> -#endif
>>  		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF2_ADDR;
>>  	}
>>  
>
diff mbox series

Patch

diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
index db538f3d88ec..19e80b95ffea 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
@@ -29,11 +29,10 @@  static inline void mxc_isi_write(struct mxc_isi_pipe *pipe, u32 reg, u32 val)
 
 void mxc_isi_channel_set_inbuf(struct mxc_isi_pipe *pipe, dma_addr_t dma_addr)
 {
-	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, dma_addr);
-#if CONFIG_ARCH_DMA_ADDR_T_64BIT
+	mxc_isi_write(pipe, CHNL_IN_BUF_ADDR, lower_32_bits(dma_addr));
 	if (pipe->isi->pdata->has_36bit_dma)
-		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR, dma_addr >> 32);
-#endif
+		mxc_isi_write(pipe, CHNL_IN_BUF_XTND_ADDR,
+			      upper_32_bits(dma_addr));
 }
 
 void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
@@ -45,34 +44,36 @@  void mxc_isi_channel_set_outbuf(struct mxc_isi_pipe *pipe,
 	val = mxc_isi_read(pipe, CHNL_OUT_BUF_CTRL);
 
 	if (buf_id == MXC_ISI_BUF1) {
-		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y, dma_addrs[0]);
-		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U, dma_addrs[1]);
-		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V, dma_addrs[2]);
-#if CONFIG_ARCH_DMA_ADDR_T_64BIT
+		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_Y,
+			      lower_32_bits(dma_addrs[0]));
+		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_U,
+			      lower_32_bits(dma_addrs[1]));
+		mxc_isi_write(pipe, CHNL_OUT_BUF1_ADDR_V,
+			      lower_32_bits(dma_addrs[2]));
 		if (pipe->isi->pdata->has_36bit_dma) {
 			mxc_isi_write(pipe, CHNL_Y_BUF1_XTND_ADDR,
-				      dma_addrs[0] >> 32);
+				      upper_32_bits(dma_addrs[0]));
 			mxc_isi_write(pipe, CHNL_U_BUF1_XTND_ADDR,
-				      dma_addrs[1] >> 32);
+				      upper_32_bits(dma_addrs[1]));
 			mxc_isi_write(pipe, CHNL_V_BUF1_XTND_ADDR,
-				      dma_addrs[2] >> 32);
+				      upper_32_bits(dma_addrs[2]));
 		}
-#endif
 		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF1_ADDR;
 	} else  {
-		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y, dma_addrs[0]);
-		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U, dma_addrs[1]);
-		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V, dma_addrs[2]);
-#if CONFIG_ARCH_DMA_ADDR_T_64BIT
+		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_Y,
+			      lower_32_bits(dma_addrs[0]));
+		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_U,
+			      lower_32_bits(dma_addrs[1]));
+		mxc_isi_write(pipe, CHNL_OUT_BUF2_ADDR_V,
+			      lower_32_bits(dma_addrs[2]));
 		if (pipe->isi->pdata->has_36bit_dma) {
 			mxc_isi_write(pipe, CHNL_Y_BUF2_XTND_ADDR,
-				      dma_addrs[0] >> 32);
+				      upper_32_bits(dma_addrs[0]));
 			mxc_isi_write(pipe, CHNL_U_BUF2_XTND_ADDR,
-				      dma_addrs[1] >> 32);
+				      upper_32_bits(dma_addrs[1]));
 			mxc_isi_write(pipe, CHNL_V_BUF2_XTND_ADDR,
-				      dma_addrs[2] >> 32);
+				      upper_32_bits(dma_addrs[2]));
 		}
-#endif
 		val ^= CHNL_OUT_BUF_CTRL_LOAD_BUF2_ADDR;
 	}