From: Dmitry Osipenko <dig...@gmail.com>
[ Upstream commit 6996312642d2dad3070c3d276c7621f35e721f30 ]
The IRQ=0 could be a valid interrupt number in kernel because interrupt
numbers are virtual in a modern kernel. Hence fix the interrupt usage in
a case if interrupt is unavailable by not overriding the interrupt number
which is used by the driver.
Note that currently Nexus 7 is the only know device which uses SMB347
kernel diver and it has a properly working interrupt, hence this patch
doesn't fix any real problems, it's a minor cleanup/improvement.
Fixes: 99298de5df92 ("power: supply: smb347-charger: Replace mutex with IRQ
disable/enable")
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/power/supply/smb347-charger.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/power/supply/smb347-charger.c
b/drivers/power/supply/smb347-charger.c
index d3bf35ed12cee..8cfbd8d6b4786 100644
--- a/drivers/power/supply/smb347-charger.c
+++ b/drivers/power/supply/smb347-charger.c
@@ -137,6 +137,7 @@
* @mains_online: is AC/DC input connected
* @usb_online: is USB input connected
* @charging_enabled: is charging enabled
+ * @irq_unsupported: is interrupt unsupported by SMB hardware
* @max_charge_current: maximum current (in uA) the battery can be charged
* @max_charge_voltage: maximum voltage (in uV) the battery can be charged
* @pre_charge_current: current (in uA) to use in pre-charging phase
@@ -193,6 +194,7 @@ struct smb347_charger {
bool mains_online;
bool usb_online;
bool charging_enabled;
+ bool irq_unsupported;
unsigned int max_charge_current;
unsigned int max_charge_voltage;
@@ -862,6 +864,9 @@ static int smb347_irq_set(struct smb347_charger *smb, bool
enable)
{
int ret;
+ if (smb->irq_unsupported)
+ return 0;
+
ret = smb347_set_writable(smb, true);
if (ret < 0)
return ret;
@@ -923,8 +928,6 @@ static int smb347_irq_init(struct smb347_charger *smb,
ret = regmap_update_bits(smb->regmap, CFG_STAT,
CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
CFG_STAT_DISABLED);
- if (ret < 0)
- client->irq = 0;
smb347_set_writable(smb, false);
@@ -1345,6 +1348,7 @@ static int smb347_probe(struct i2c_client *client,
if (ret < 0) {
dev_warn(dev, "failed to initialize IRQ: %d\n", ret);
dev_warn(dev, "disabling IRQ support\n");
+ smb->irq_unsupported = true;
} else {
smb347_irq_enable(smb);
}
@@ -1357,8 +1361,8 @@ static int smb347_remove(struct i2c_client *client)
{
struct smb347_charger *smb = i2c_get_clientdata(client);
- if (client->irq)
- smb347_irq_disable(smb);
+ smb347_irq_disable(smb);
+
return 0;
}
--
2.27.0
