Re: [PATCH net-next v2] r8152: reduce the number of Tx

From: David Miller
Date: Fri Aug 29 2014 - 23:25:15 EST


From: Hayes Wang <hayeswang@xxxxxxxxxxx>
Date: Thu, 28 Aug 2014 10:24:18 +0800

> Because the Tx has the features of stopping queue and aggregation,
> We don't need many tx buffers. Change the tx number from 10 to 4
> to reduce the usage of the memory. This could save 16K * 6 bytes
> memory.
>
> Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
> ---
> drivers/net/usb/r8152.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index 33dcc97..cc64dc0 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -424,7 +424,7 @@ enum rtl_register_content {
> FULL_DUP = 0x01,
> };
>
> -#define RTL8152_MAX_TX 10
> +#define RTL8152_MAX_TX 4
> #define RTL8152_MAX_RX 10

This driver has a loop that iterates MAX_TX times to initialize both
the RX and TX buffers.

So if they are not equal, it can't possibly work.

Sorry, I'm not applying this.
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