From: Marc Kleine-Budde Date: Tue, 16 Sep 2014 13:31:27 +0000 (+0200) Subject: can: flexcan: put TX mailbox into TX_INACTIVE mode after tx-complete X-Git-Tag: v3.2.64~42 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3158bdb265224ef34e7248fd802df13e36b5f3c3;p=pandora-kernel.git can: flexcan: put TX mailbox into TX_INACTIVE mode after tx-complete commit de5944883ebbedbf5adc8497659772f5da7b7d72 upstream. After sending a RTR frame the TX mailbox becomes a RX_EMPTY mailbox. To avoid side effects when the RX-FIFO is full, this patch puts the TX mailbox into TX_INACTIVE mode in the transmission complete interrupt handler. This, of course, leaves a race window between the actual completion of the transmission and the handling of tx-complete interrupt. However this is the best we can do without busy polling the tx complete interrupt. Signed-off-by: Marc Kleine-Budde [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed