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Date: Tue, 29 Oct 2013 01:31:01 -0700 From: Joe Perches <joe@...ches.com> To: Markus Pargmann <mpa@...gutronix.de> Cc: Marc Kleine-Budde <mkl@...gutronix.de>, Wolfgang Grandegger <wg@...ndegger.com>, linux-can@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kernel@...gutronix.de Subject: Re: [PATCH v2] can: c_can: Speed up rx_poll function On Tue, 2013-10-29 at 09:27 +0100, Markus Pargmann wrote: > This patch speeds up the rx_poll function by reducing the number of > register reads. [] > The third change is to replace the for-loop by a find_next_bit loop. You need to update the commit message. > diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c [] > @@ -798,17 +798,19 @@ static int c_can_do_rx_poll(struct net_device *dev, int quota) [] > + while (quota > 0 && (val = priv->read_reg(priv, C_CAN_INTPND1_REG))) { > + while ((msg_obj = ffs(val)) && quota > 0) { > + val &= ~BIT(msg_obj - 1); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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