From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: [PATCH 5/6] ACPI / LPSS: return no error from register_device_clock in special cases Date: Wed, 27 Mar 2013 10:58:01 +0200 Message-ID: <1364374682-8547-6-git-send-email-andriy.shevchenko@linux.intel.com> References: <1364374682-8547-1-git-send-email-andriy.shevchenko@linux.intel.com> Return-path: In-Reply-To: <1364374682-8547-1-git-send-email-andriy.shevchenko@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Rafael J . Wysocki" , Mika Westerberg , Viresh Kumar , linux-kernel@vger.kernel.org, spear-devel , Vinod Koul , linux-acpi@vger.kernel.org Cc: Andy Shevchenko List-Id: linux-acpi@vger.kernel.org When device uses the fixed clock and has no private space of LTR, we have to create main LPSS clock and register platform device. This is normally a case for LPSS DMA controller. Signed-off-by: Andy Shevchenko --- drivers/acpi/acpi_lpss.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index b1c9542..4015929 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -95,6 +95,10 @@ static int register_device_clock(struct acpi_device *adev, if (!lpss_clk_dev) lpt_register_clock_device(); + if (!dev_desc->prv_offset && dev_desc->clk_required) + /* There is no error when device uses fixed clock */ + return 0; + if (!dev_desc->clk_parent || !pdata->mmio_base || pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE) return -ENODATA; -- 1.8.2.rc0.22.gb3600c3