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authorAlexander Usyskin <alexander.usyskin@intel.com>2016-11-16 22:51:29 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-17 16:37:49 +0100
commit7c7a6077f5c7a35fc03a7f452875d8440dd1bc8d (patch)
treee495b143494b3a7b98ce1841d8cc3c2a5f97c2cf /drivers/nfc
parentc110cdb171488c60295d49fda16634cfec58ae28 (diff)
downloadop-kernel-dev-7c7a6077f5c7a35fc03a7f452875d8440dd1bc8d.zip
op-kernel-dev-7c7a6077f5c7a35fc03a7f452875d8440dd1bc8d.tar.gz
mei: bus: split RX and async notification callbacks
Split callbacks for RX and async notification events on mei bus to eliminate synchronization problems and to open way for RX optimizations. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/mei_phy.c36
1 files changed, 16 insertions, 20 deletions
diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c
index 03139c5..8a04c5e 100644
--- a/drivers/nfc/mei_phy.c
+++ b/drivers/nfc/mei_phy.c
@@ -297,9 +297,11 @@ static int mei_nfc_recv(struct nfc_mei_phy *phy, u8 *buf, size_t length)
}
-static void nfc_mei_event_cb(struct mei_cl_device *cldev, u32 events)
+static void nfc_mei_rx_cb(struct mei_cl_device *cldev)
{
struct nfc_mei_phy *phy = mei_cldev_get_drvdata(cldev);
+ struct sk_buff *skb;
+ int reply_size;
if (!phy)
return;
@@ -307,27 +309,22 @@ static void nfc_mei_event_cb(struct mei_cl_device *cldev, u32 events)
if (phy->hard_fault != 0)
return;
- if (events & BIT(MEI_CL_EVENT_RX)) {
- struct sk_buff *skb;
- int reply_size;
-
- skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
- if (!skb)
- return;
+ skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
+ if (!skb)
+ return;
- reply_size = mei_nfc_recv(phy, skb->data, MEI_NFC_MAX_READ);
- if (reply_size < MEI_NFC_HEADER_SIZE) {
- kfree_skb(skb);
- return;
- }
+ reply_size = mei_nfc_recv(phy, skb->data, MEI_NFC_MAX_READ);
+ if (reply_size < MEI_NFC_HEADER_SIZE) {
+ kfree_skb(skb);
+ return;
+ }
- skb_put(skb, reply_size);
- skb_pull(skb, MEI_NFC_HEADER_SIZE);
+ skb_put(skb, reply_size);
+ skb_pull(skb, MEI_NFC_HEADER_SIZE);
- MEI_DUMP_SKB_IN("mei frame read", skb);
+ MEI_DUMP_SKB_IN("mei frame read", skb);
- nfc_hci_recv_frame(phy->hdev, skb);
- }
+ nfc_hci_recv_frame(phy->hdev, skb);
}
static int nfc_mei_phy_enable(void *phy_id)
@@ -358,8 +355,7 @@ static int nfc_mei_phy_enable(void *phy_id)
goto err;
}
- r = mei_cldev_register_event_cb(phy->cldev, BIT(MEI_CL_EVENT_RX),
- nfc_mei_event_cb);
+ r = mei_cldev_register_rx_cb(phy->cldev, nfc_mei_rx_cb);
if (r) {
pr_err("Event cb registration failed %d\n", r);
goto err;
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