From: Hayes Wang <hayeswang@xxxxxxxxxxx> Date: Thu, 25 Jul 2013 15:59:02 +0800 > Some USB buffers use stack which may not be DMA-able. > Use the buffers from kmalloc to replace those one. > > Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx> I don't think it's reasonable to kmalloc() a small integer every time you want to use a USB message transfer to read or write chip registers. Instead, add a scratch buffer to struct r8152 which is allocated once at driver attach time and which you can use for the transfers. I think you only need an array of two u32's so something like: u32 transfer_buf[2]; ought to be sufficient. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
