p2sb_spinlock is used in i801_add_tco_spt() only, and in process context
only. Therefore a mutex is sufficient, and we can make the definition
local to i801_add_tco_spt().
Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>
Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
drivers/i2c/busses/i2c-i801.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index ef6dbb531..12e0c2ac3 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -110,6 +110,7 @@
#include <linux/platform_device.h>
#include <linux/platform_data/itco_wdt.h>
#include <linux/pm_runtime.h>
+#include <linux/mutex.h>
#if IS_ENABLED(CONFIG_I2C_MUX_GPIO) && defined CONFIG_DMI
#include <linux/gpio/machine.h>
@@ -1492,12 +1493,11 @@ static const struct itco_wdt_platform_data spt_tco_platform_data = {
.version = 4,
};
-static DEFINE_SPINLOCK(p2sb_spinlock);
-
static struct platform_device *
i801_add_tco_spt(struct i801_priv *priv, struct pci_dev *pci_dev,
struct resource *tco_res)
{
+ static DEFINE_MUTEX(p2sb_mutex);
struct resource *res;
unsigned int devfn;
u64 base64_addr;
@@ -1510,7 +1510,7 @@ i801_add_tco_spt(struct i801_priv *priv, struct pci_dev *pci_dev,
* enumerated by the PCI subsystem, so we need to unhide/hide it
* to lookup the P2SB BAR.
*/
- spin_lock(&p2sb_spinlock);
+ mutex_lock(&p2sb_mutex);
devfn = PCI_DEVFN(PCI_SLOT(pci_dev->devfn), 1);
@@ -1528,7 +1528,7 @@ i801_add_tco_spt(struct i801_priv *priv, struct pci_dev *pci_dev,
/* Hide the P2SB device, if it was hidden before */
if (hidden)
pci_bus_write_config_byte(pci_dev->bus, devfn, 0xe1, hidden);
- spin_unlock(&p2sb_spinlock);
+ mutex_unlock(&p2sb_mutex);
res = &tco_res[1];
if (pci_dev->device == PCI_DEVICE_ID_INTEL_DNV_SMBUS)
--
2.32.0
