2022-04-03 16:55:33

by Nava kishore Manne

[permalink] [raw]
Subject: [PATCH v3 1/5] fpga: zynq: Fix incorrect variable type

zynq_fpga_has_sync () API is expecting "u8 *" but the
formal parameter that was passed is of type "const char *".
fixes this issue by changing the buf type to "const char *"

This patch will also update zynq_fpga_has_sync () API description
to align with API functionality.

Signed-off-by: Nava kishore Manne <[email protected]>
---
Changes for v2:
-None.
Changes for v3:
- Changed arg buf type to "const char *" as suggested by Tom.

drivers/fpga/zynq-fpga.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
index 426aa34c6a0d..ada07eea64bc 100644
--- a/drivers/fpga/zynq-fpga.c
+++ b/drivers/fpga/zynq-fpga.c
@@ -235,11 +235,11 @@ static irqreturn_t zynq_fpga_isr(int irq, void *data)
return IRQ_HANDLED;
}

-/* Sanity check the proposed bitstream. It must start with the sync word in
- * the correct byte order, and be dword aligned. The input is a Xilinx .bin
- * file with every 32 bit quantity swapped.
+/* Sanity check the proposed bitstream. The sync word must be found in the
+ * correct byte order and it should be dword aligned. The input is a
+ * Xilinx.bin file with every 32 bit quantity swapped.
*/
-static bool zynq_fpga_has_sync(const u8 *buf, size_t count)
+static bool zynq_fpga_has_sync(const char *buf, size_t count)
{
for (; count >= 4; buf += 4, count -= 4)
if (buf[0] == 0x66 && buf[1] == 0x55 && buf[2] == 0x99 &&
--
2.25.1


2022-04-05 05:09:04

by Xu Yilun

[permalink] [raw]
Subject: Re: [PATCH v3 1/5] fpga: zynq: Fix incorrect variable type

On Sun, Apr 03, 2022 at 10:46:37AM +0530, Nava kishore Manne wrote:
> zynq_fpga_has_sync () API is expecting "u8 *" but the
> formal parameter that was passed is of type "const char *".
> fixes this issue by changing the buf type to "const char *"

Fix

>
> This patch will also update zynq_fpga_has_sync () API description
> to align with API functionality.
>
> Signed-off-by: Nava kishore Manne <[email protected]>
> ---
> Changes for v2:
> -None.
> Changes for v3:
> - Changed arg buf type to "const char *" as suggested by Tom.
>
> drivers/fpga/zynq-fpga.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
> index 426aa34c6a0d..ada07eea64bc 100644
> --- a/drivers/fpga/zynq-fpga.c
> +++ b/drivers/fpga/zynq-fpga.c
> @@ -235,11 +235,11 @@ static irqreturn_t zynq_fpga_isr(int irq, void *data)
> return IRQ_HANDLED;
> }
>
> -/* Sanity check the proposed bitstream. It must start with the sync word in
> - * the correct byte order, and be dword aligned. The input is a Xilinx .bin
> - * file with every 32 bit quantity swapped.
> +/* Sanity check the proposed bitstream. The sync word must be found in the
> + * correct byte order and it should be dword aligned. The input is a
> + * Xilinx.bin file with every 32 bit quantity swapped.

I didn't found these changes in v2, or in change logs. Please record it.

Sorry, as a foreign English user, I didn't find the necessity of the change.
The previous words are as clear as the current. Anyone could help?

And they are not for variable type fix. Please make a separate patch if
really needed.

Thanks,
Yilun

> */
> -static bool zynq_fpga_has_sync(const u8 *buf, size_t count)
> +static bool zynq_fpga_has_sync(const char *buf, size_t count)
> {
> for (; count >= 4; buf += 4, count -= 4)
> if (buf[0] == 0x66 && buf[1] == 0x55 && buf[2] == 0x99 &&
> --
> 2.25.1

2022-04-06 07:46:03

by Russ Weight

[permalink] [raw]
Subject: Re: [PATCH v3 1/5] fpga: zynq: Fix incorrect variable type



On 4/4/22 21:38, Xu Yilun wrote:
> On Sun, Apr 03, 2022 at 10:46:37AM +0530, Nava kishore Manne wrote:
>> zynq_fpga_has_sync () API is expecting "u8 *" but the
>> formal parameter that was passed is of type "const char *".
>> fixes this issue by changing the buf type to "const char *"
> Fix
>
>> This patch will also update zynq_fpga_has_sync () API description
>> to align with API functionality.
>>
>> Signed-off-by: Nava kishore Manne <[email protected]>
>> ---
>> Changes for v2:
>> -None.
>> Changes for v3:
>> - Changed arg buf type to "const char *" as suggested by Tom.
>>
>> drivers/fpga/zynq-fpga.c | 8 ++++----
>> 1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
>> index 426aa34c6a0d..ada07eea64bc 100644
>> --- a/drivers/fpga/zynq-fpga.c
>> +++ b/drivers/fpga/zynq-fpga.c
>> @@ -235,11 +235,11 @@ static irqreturn_t zynq_fpga_isr(int irq, void *data)
>> return IRQ_HANDLED;
>> }
>>
>> -/* Sanity check the proposed bitstream. It must start with the sync word in
>> - * the correct byte order, and be dword aligned. The input is a Xilinx .bin
>> - * file with every 32 bit quantity swapped.
>> +/* Sanity check the proposed bitstream. The sync word must be found in the
>> + * correct byte order and it should be dword aligned. The input is a
>> + * Xilinx.bin file with every 32 bit quantity swapped.
> I didn't found these changes in v2, or in change logs. Please record it.
>
> Sorry, as a foreign English user, I didn't find the necessity of the change.
> The previous words are as clear as the current. Anyone could help?

I think the change adds a little clarity to the second sentence.

- Russ
>
> And they are not for variable type fix. Please make a separate patch if
> really needed.
>
> Thanks,
> Yilun
>
>> */
>> -static bool zynq_fpga_has_sync(const u8 *buf, size_t count)
>> +static bool zynq_fpga_has_sync(const char *buf, size_t count)
>> {
>> for (; count >= 4; buf += 4, count -= 4)
>> if (buf[0] == 0x66 && buf[1] == 0x55 && buf[2] == 0x99 &&
>> --
>> 2.25.1