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Date: Mon, 9 Sep 2013 21:13:08 +0800 From: Yijing Wang <wangyijing@...wei.com> To: Bjorn Helgaas <bhelgaas@...gle.com>, Chris Metcalf <cmetcalf@...era.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, David Airlie <airlied@...ux.ie>, Mike Marciniszyn <infinipath@...el.com>, Roland Dreier <roland@...nel.org>, Roland Dreier <roland@...estorage.com> CC: <linux-kernel@...r.kernel.org>, Mark Einon <mark.einon@...il.com>, Sean Hefty <sean.hefty@...el.com>, Hal Rosenstock <hal.rosenstock@...il.com>, <linux-rdma@...r.kernel.org>, <linux-pci@...r.kernel.org>, Yijing Wang <wangyijing@...wei.com>, Hanjun Guo <guohanjun@...wei.com> Subject: [PATCH 6/6] radeon: Use pcie_get_readrq() and pcie_set_readrq() to simplify code Use pcie_get_readrq() and pcie_set_readrq() functions to simplify code. Signed-off-by: Yijing Wang <wangyijing@...wei.com> --- drivers/gpu/drm/radeon/evergreen.c | 19 ++++++------------- 1 files changed, 6 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index d5b49e3..b191f92 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1169,23 +1169,16 @@ int evergreen_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk) void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev) { - u16 ctl, v; - int err; - - err = pcie_capability_read_word(rdev->pdev, PCI_EXP_DEVCTL, &ctl); - if (err) - return; - - v = (ctl & PCI_EXP_DEVCTL_READRQ) >> 12; + int readrq; + u16 v; + readrq = pcie_get_readrq(rdev->pdev); + v = ffs(readrq) - 8; /* if bios or OS sets MAX_READ_REQUEST_SIZE to an invalid value, fix it * to avoid hangs or perfomance issues */ - if ((v == 0) || (v == 6) || (v == 7)) { - ctl &= ~PCI_EXP_DEVCTL_READRQ; - ctl |= (2 << 12); - pcie_capability_write_word(rdev->pdev, PCI_EXP_DEVCTL, ctl); - } + if ((v == 0) || (v == 6) || (v == 7)) + pcie_set_readrq(rdev->pdev, 512); } static bool dce4_is_in_vblank(struct radeon_device *rdev, int crtc) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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