From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
linux-kernel@vger.kernel.org,
spear-devel <spear-devel@list.st.com>,
Vinod Koul <vinod.koul@intel.com>,
linux-acpi@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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 [thread overview]
Message-ID: <1364374682-8547-6-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1364374682-8547-1-git-send-email-andriy.shevchenko@linux.intel.com>
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 <andriy.shevchenko@linux.intel.com>
---
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
next prev parent reply other threads:[~2013-03-27 9:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-27 8:57 [PATCH 0/6] dmaengine: add ACPI DMA helpers and use them in dw_dmac Andy Shevchenko
2013-03-27 8:57 ` [PATCH 1/6] dma: acpi-dma: introduce ACPI DMA helpers Andy Shevchenko
2013-03-29 20:35 ` Vinod Koul
2013-03-30 6:53 ` Mika Westerberg
2013-03-27 8:57 ` [PATCH 2/6] dmaengine: call acpi_dma_request_slave_channel as well Andy Shevchenko
2013-03-27 8:57 ` [PATCH 3/6] dma: acpi-dma: parse CSRT to extract additional resources Andy Shevchenko
2013-03-29 21:33 ` Vinod Koul
2013-03-30 7:04 ` Mika Westerberg
2013-04-08 13:01 ` Andy Shevchenko
2013-03-27 8:58 ` [PATCH 4/6] dw_dmac: add ACPI support Andy Shevchenko
2013-03-27 8:58 ` Andy Shevchenko [this message]
2013-03-29 22:26 ` [PATCH 5/6] ACPI / LPSS: return no error from register_device_clock in special cases Rafael J. Wysocki
2013-03-27 8:58 ` [PATCH 6/6] ACPI / LPSS: add Lynxpoint DMA controller to the list Andy Shevchenko
2013-03-29 22:27 ` Rafael J. Wysocki
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