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authorJens Axboe <axboe@kernel.dk>2018-02-05 12:55:38 -0700
committerJens Axboe <axboe@kernel.dk>2018-02-05 12:55:38 -0700
commit9e05c864993c5442227f83ae1694a737d7a102ed (patch)
treee35b60bb3c0c179f147e9acaad5444f1e5d9117e /drivers/pinctrl/pinctrl-mcp23s08.c
parent3c15f3f545afa320c5e3822825a9a53c664776b6 (diff)
parent35277995e17919ab838beae765f440674e8576eb (diff)
Merge branch 'master' into test
* master: (688 commits) dt-bindings: mailbox: qcom: Document the APCS clock binding mailbox: qcom: Create APCS child device for clock controller mailbox: qcom: Convert APCS IPC driver to use regmap KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES KVM/x86: Add IBPB support KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX pinctrl: remove include file from <linux/device.h> firmware: dmi: handle missing DMI data gracefully firmware: dmi_scan: Fix handling of empty DMI strings firmware: dmi_scan: Drop dmi_initialized firmware: dmi: Optimize dmi_matches Revert "defer call to mem_cgroup_sk_alloc()" soreuseport: fix mem leak in reuseport_add_sock() net: qlge: use memmove instead of skb_copy_to_linear_data net: qed: use correct strncpy() size net: cxgb4: avoid memcpy beyond end of source buffer cls_u32: add missing RCU annotation. r8152: set rx mode early when linking on ...
Diffstat (limited to 'drivers/pinctrl/pinctrl-mcp23s08.c')
-rw-r--r--drivers/pinctrl/pinctrl-mcp23s08.c54
1 files changed, 24 insertions, 30 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c
index 4a6ea159c65d..644c5beb05cb 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -455,31 +455,22 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
defval_changed, gpio_set;
mutex_lock(&mcp->lock);
- if (mcp_read(mcp, MCP_INTF, &intf) < 0) {
- mutex_unlock(&mcp->lock);
- return IRQ_HANDLED;
- }
+ if (mcp_read(mcp, MCP_INTF, &intf))
+ goto unlock;
- if (mcp_read(mcp, MCP_INTCAP, &intcap) < 0) {
- mutex_unlock(&mcp->lock);
- return IRQ_HANDLED;
- }
+ if (mcp_read(mcp, MCP_INTCAP, &intcap))
+ goto unlock;
- if (mcp_read(mcp, MCP_INTCON, &intcon) < 0) {
- mutex_unlock(&mcp->lock);
- return IRQ_HANDLED;
- }
+ if (mcp_read(mcp, MCP_INTCON, &intcon))
+ goto unlock;
- if (mcp_read(mcp, MCP_DEFVAL, &defval) < 0) {
- mutex_unlock(&mcp->lock);
- return IRQ_HANDLED;
- }
+ if (mcp_read(mcp, MCP_DEFVAL, &defval))
+ goto unlock;
/* This clears the interrupt(configurable on S18) */
- if (mcp_read(mcp, MCP_GPIO, &gpio) < 0) {
- mutex_unlock(&mcp->lock);
- return IRQ_HANDLED;
- }
+ if (mcp_read(mcp, MCP_GPIO, &gpio))
+ goto unlock;
+
gpio_orig = mcp->cached_gpio;
mcp->cached_gpio = gpio;
mutex_unlock(&mcp->lock);
@@ -541,6 +532,10 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
}
return IRQ_HANDLED;
+
+unlock:
+ mutex_unlock(&mcp->lock);
+ return IRQ_HANDLED;
}
static void mcp23s08_irq_mask(struct irq_data *data)
@@ -753,13 +748,12 @@ static void mcp23s08_dbg_show(struct seq_file *s, struct gpio_chip *chip)
if (!label)
continue;
- seq_printf(s, " gpio-%-3d P%c.%d (%-12s) %s %s %s",
- chip->base + t, bank, t, label,
- (iodir & mask) ? "in " : "out",
- (gpio & mask) ? "hi" : "lo",
- (gppu & mask) ? "up" : " ");
+ seq_printf(s, " gpio-%-3d P%c.%d (%-12s) %s %s %s\n",
+ chip->base + t, bank, t, label,
+ (iodir & mask) ? "in " : "out",
+ (gpio & mask) ? "hi" : "lo",
+ (gppu & mask) ? "up" : " ");
/* NOTE: ignoring the irq-related registers */
- seq_puts(s, "\n");
}
done:
mutex_unlock(&mcp->lock);
@@ -896,16 +890,16 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
goto fail;
}
- ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp);
- if (ret < 0)
- goto fail;
-
if (mcp->irq && mcp->irq_controller) {
ret = mcp23s08_irq_setup(mcp);
if (ret)
goto fail;
}
+ ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp);
+ if (ret < 0)
+ goto fail;
+
mcp->pinctrl_desc.name = "mcp23xxx-pinctrl";
mcp->pinctrl_desc.pctlops = &mcp_pinctrl_ops;
mcp->pinctrl_desc.confops = &mcp_pinconf_ops;