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Date: Tue, 5 May 2015 10:12:09 -0500 From: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com> To: <rjw@...ysocki.net>, <lenb@...nel.org>, <catalin.marinas@....com>, <will.deacon@....com>, <thomas.lendacky@....com>, <herbert@...dor.apana.org.au>, <davem@...emloft.net> CC: <msalter@...hat.com>, <hanjun.guo@...aro.org>, <al.stone@...aro.org>, <grant.likely@...aro.org>, <arnd@...db.de>, <leo.duran@....com>, <linux-arm-kernel@...ts.infradead.org>, <linux-acpi@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linaro-acpi@...ts.linaro.org>, <netdev@...r.kernel.org>, <linux-crypto@...r.kernel.org>, "Suravee Suthikulpanit" <Suravee.Suthikulpanit@....com> Subject: [V2 PATCH 5/5] amd-xgbe: Unify coherency checking logic with device_dma_is_coherent() Currently, amd-xgbe driver has separate logic to determine device coherency for DT vs. ACPI. This patch simplifies the code with a call to device_dma_is_coherent(). CC: David S. Miller <davem@...emloft.net> Signed-off-by: Tom Lendacky <thomas.lendacky@....com> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com> --- drivers/net/ethernet/amd/xgbe/xgbe-main.c | 27 +-------------------------- 1 file changed, 1 insertion(+), 26 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c index 7149053..6d2c702 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c @@ -168,13 +168,8 @@ static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata) #ifdef CONFIG_ACPI static int xgbe_acpi_support(struct xgbe_prv_data *pdata) { - struct acpi_device *adev = pdata->adev; struct device *dev = pdata->dev; u32 property; - acpi_handle handle; - acpi_status status; - unsigned long long data; - int cca; int ret; /* Obtain the system clock setting */ @@ -195,24 +190,6 @@ static int xgbe_acpi_support(struct xgbe_prv_data *pdata) } pdata->ptpclk_rate = property; - /* Retrieve the device cache coherency value */ - handle = adev->handle; - do { - status = acpi_evaluate_integer(handle, "_CCA", NULL, &data); - if (!ACPI_FAILURE(status)) { - cca = data; - break; - } - - status = acpi_get_parent(handle, &handle); - } while (!ACPI_FAILURE(status)); - - if (ACPI_FAILURE(status)) { - dev_err(dev, "error obtaining acpi coherency value\n"); - return -EINVAL; - } - pdata->coherent = !!cca; - return 0; } #else /* CONFIG_ACPI */ @@ -243,9 +220,6 @@ static int xgbe_of_support(struct xgbe_prv_data *pdata) } pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk); - /* Retrieve the device cache coherency value */ - pdata->coherent = of_dma_is_coherent(dev->of_node); - return 0; } #else /* CONFIG_OF */ @@ -364,6 +338,7 @@ static int xgbe_probe(struct platform_device *pdev) goto err_io; /* Set the DMA coherency values */ + pdata->coherent = device_dma_is_coherent(pdata->dev); if (pdata->coherent) { pdata->axdomain = XGBE_DMA_OS_AXDOMAIN; pdata->arcache = XGBE_DMA_OS_ARCACHE; -- 2.1.0 -- 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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