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authorJarkko Nikula <jarkko.nikula@linux.intel.com>2015-08-31 17:31:28 +0300
committerWolfram Sang <wsa@the-dreams.de>2015-10-15 14:07:19 +0200
commitc335631a68db4b32b24cb59814c485c45f0f4506 (patch)
treea8142646844cfdedcb03d7074d5f11bb7a4811d3 /drivers/i2c
parent58b0497dad1abbe389af83e3d7706be584cf3ba2 (diff)
i2c: designware: Remove interrupt clearing from i2c_dw_pci_probe()
There is no need to clear interrupts in i2c_dw_pci_probe() since only place where interrupts are unmasked is i2c_dw_xfer_init() and there interrupts are always cleared after commit 2a2d95e9d6d2 ("i2c: designware: always clear interrupts before enabling them"). This allows to cleanup the code and replace i2c_dw_clear_int() in i2c_dw_xfer_init() by direct register read as there are no other callers. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-designware-core.c8
-rw-r--r--drivers/i2c/busses/i2c-designware-core.h1
-rw-r--r--drivers/i2c/busses/i2c-designware-pcidrv.c1
3 files changed, 1 insertions, 9 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c
index 7441cdc1b34a..dec0af7d0471 100644
--- a/drivers/i2c/busses/i2c-designware-core.c
+++ b/drivers/i2c/busses/i2c-designware-core.c
@@ -438,7 +438,7 @@ static void i2c_dw_xfer_init(struct dw_i2c_dev *dev)
__i2c_dw_enable(dev, true);
/* Clear and enable interrupts */
- i2c_dw_clear_int(dev);
+ dw_readl(dev, DW_IC_CLR_INTR);
dw_writel(dev, DW_IC_INTR_DEFAULT_MASK, DW_IC_INTR_MASK);
}
@@ -839,12 +839,6 @@ void i2c_dw_disable(struct dw_i2c_dev *dev)
}
EXPORT_SYMBOL_GPL(i2c_dw_disable);
-void i2c_dw_clear_int(struct dw_i2c_dev *dev)
-{
- dw_readl(dev, DW_IC_CLR_INTR);
-}
-EXPORT_SYMBOL_GPL(i2c_dw_clear_int);
-
void i2c_dw_disable_int(struct dw_i2c_dev *dev)
{
dw_writel(dev, 0, DW_IC_INTR_MASK);
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index 9630222abf32..f44aeeeb91c6 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -122,7 +122,6 @@ extern irqreturn_t i2c_dw_isr(int this_irq, void *dev_id);
extern void i2c_dw_enable(struct dw_i2c_dev *dev);
extern u32 i2c_dw_is_enabled(struct dw_i2c_dev *dev);
extern void i2c_dw_disable(struct dw_i2c_dev *dev);
-extern void i2c_dw_clear_int(struct dw_i2c_dev *dev);
extern void i2c_dw_disable_int(struct dw_i2c_dev *dev);
extern u32 i2c_dw_read_comp_param(struct dw_i2c_dev *dev);
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index df23e8c30e6f..e477dddcdae5 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -268,7 +268,6 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
}
i2c_dw_disable_int(dev);
- i2c_dw_clear_int(dev);
r = i2c_add_numbered_adapter(adap);
if (r) {
dev_err(&pdev->dev, "failure adding adapter\n");