From 7be0f5b5e169a566be9400481c21de32f147ccbe Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Wed, 16 Dec 2015 04:21:45 -0800 Subject: [PATCH] mwifiex: enable MSI interrupt support in pcie Newer pcie devices (8897 onwards) support MSI. This patch enables it. Signed-off-by: Avinash Patil Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/pcie.c | 33 ++++++++++++++++----- drivers/net/wireless/marvell/mwifiex/pcie.h | 1 + 2 files changed, 26 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index 21192b6f9c64..9703848ba9f8 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -2599,6 +2599,30 @@ static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter) kfree(card); } +static int mwifiex_pcie_request_irq(struct mwifiex_adapter *adapter) +{ + int ret; + struct pcie_service_card *card = adapter->card; + struct pci_dev *pdev = card->dev; + + if (pci_enable_msi(pdev) != 0) + pci_disable_msi(pdev); + else + card->msi_enable = 1; + + mwifiex_dbg(adapter, INFO, "msi_enable = %d\n", card->msi_enable); + + ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED, + "MRVL_PCIE", pdev); + if (ret) { + pr_err("request_irq failed: ret=%d\n", ret); + adapter->card = NULL; + return -1; + } + + return 0; +} + /* * This function registers the PCIE device. * @@ -2606,21 +2630,14 @@ static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter) */ static int mwifiex_register_dev(struct mwifiex_adapter *adapter) { - int ret; struct pcie_service_card *card = adapter->card; struct pci_dev *pdev = card->dev; /* save adapter pointer in card */ card->adapter = adapter; - ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED, - "MRVL_PCIE", pdev); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "request_irq failed: ret=%d\n", ret); - adapter->card = NULL; + if (mwifiex_pcie_request_irq(adapter)) return -1; - } adapter->dev = &pdev->dev; adapter->tx_buf_size = card->pcie.tx_buf_size; diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h index 347ba45f1f2a..6fc28737b576 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie.h @@ -326,6 +326,7 @@ struct pcie_service_card { dma_addr_t sleep_cookie_pbase; void __iomem *pci_mmap; void __iomem *pci_mmap1; + int msi_enable; }; static inline int -- 2.39.5