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path: root/drivers/net/ethernet/renesas/ravb_main.c
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2015-07-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-36/+38
Conflicts: net/bridge/br_mdb.c br_mdb.c conflict was a function call being removed to fix a bug in 'net' but whose signature was changed in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-22ravb: fix ring memory allocationSergei Shtylyov1-25/+34
The driver is written as if it can adapt to a low memory situation allocating less RX skbs and TX aligned buffers than the respective RX/TX ring sizes. In reality though the driver would malfunction in this case. Stop being overly smart and just fail in such situation -- this is achieved by moving the memory allocation from ravb_ring_format() to ravb_ring_init(). We leave dma_map_single() calls in place but make their failure non-fatal by marking the corresponding RX descriptors with zero data size which should prevent DMA to an invalid addresses. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-21ravb: fix race updating TCCRSergei Shtylyov1-4/+1
The TCCR.TSRQn bit may get clearead after TCCR gets read, so that TCCR write would get skipped. We don't need to check this bit before setting. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-17ravb: do not invalidate cache for RX buffer twiceSergei Shtylyov1-7/+3
First, dma_sync_single_for_cpu() shouldn't have been called in the first place (it's a streaming DMA API), dma_unmap_single() should have been called instead. Second, dma_unmap_single() call after handing the buffer to napi_gro_receive() makes little sense. Moreover desc->dptr might not be valid at this point. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-15ravb: kill useless initializersSergei Shtylyov1-6/+6
Some of the local variable intializers in the driver turned out to be pointless, kill them. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-11Renesas Ethernet AVB PTP clock driverSergei Shtylyov1-0/+1824
Ethernet AVB device includes the gPTP timer, so we can implement a PTP clock driver. We're doing that in a separate file, with the main Ethernet driver calling the PTP driver's [de]initialization and interrupt handler functions. Unfortunately, the clock seems tightly coupled with the AVB-DMAC, so when that one leaves the operation mode, we have to unregister the PTP clock... :-( Based on the original patches by Masaru Nagai. Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>