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[net-next,v4,11/13] net: netcp: support probe deferral

Message ID 1524000642-23944-12-git-send-email-m-karicheri2@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Murali Karicheri April 17, 2018, 9:30 p.m. UTC 
The netcp driver shouldn't proceed until the knav qmss and dma
devices are ready. So return -EPROBE_DEFER if these devices are not
ready.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
---
 drivers/net/ethernet/ti/netcp_core.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
index 9c51b25..736f6f7 100644
--- a/drivers/net/ethernet/ti/netcp_core.c
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -2158,6 +2158,10 @@  static int netcp_probe(struct platform_device *pdev)
 	struct netcp_module *module;
 	int ret;
 
+	if (!knav_dma_device_ready() ||
+	    !knav_qmss_device_ready())
+		return -EPROBE_DEFER;
+
 	if (!node) {
 		dev_err(dev, "could not find device info\n");
 		return -ENODEV;