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-rw-r--r--drivers/char/cs5535_gpio.c2
-rw-r--r--drivers/char/dtlk.c2
-rw-r--r--drivers/char/pc8736x_gpio.c1
-rw-r--r--drivers/char/ppdev.c1
-rw-r--r--drivers/char/scx200_gpio.c1
-rw-r--r--drivers/char/tb0219.c1
-rw-r--r--drivers/char/vr41xx_giu.c2
-rw-r--r--drivers/infiniband/core/ucm.c1
-rw-r--r--drivers/infiniband/hw/ipath/ipath_file_ops.c1
-rw-r--r--drivers/net/ppp_generic.c1
-rw-r--r--drivers/scsi/3w-9xxx.c2
-rw-r--r--drivers/scsi/3w-xxxx.c2
-rw-r--r--drivers/scsi/megaraid.c5
-rw-r--r--drivers/scsi/megaraid/megaraid_sas.c1
14 files changed, 21 insertions, 2 deletions
diff --git a/drivers/char/cs5535_gpio.c b/drivers/char/cs5535_gpio.c
index c0a4a0bb509..628e3d3249d 100644
--- a/drivers/char/cs5535_gpio.c
+++ b/drivers/char/cs5535_gpio.c
@@ -153,6 +153,8 @@ static ssize_t cs5535_gpio_read(struct file *file, char __user *buf,
return count;
}
+/* No BKL needed here - "mask" is the only global resource used
+ here and it's a boot-time parameter */
static int cs5535_gpio_open(struct inode *inode, struct file *file)
{
u32 m = iminor(inode);
diff --git a/drivers/char/dtlk.c b/drivers/char/dtlk.c
index abde6ddefe6..433388c6023 100644
--- a/drivers/char/dtlk.c
+++ b/drivers/char/dtlk.c
@@ -288,6 +288,8 @@ static int dtlk_ioctl(struct inode *inode,
}
}
+/* No BKL needed here; "dtlk_busy" is the only global resource,
+ and it is not ever set by anybody (test is broken) */
static int dtlk_open(struct inode *inode, struct file *file)
{
TRACE_TEXT("(dtlk_open");
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index ecfaf180e5b..8715dc9f4a5 100644
--- a/drivers/char/pc8736x_gpio.c
+++ b/drivers/char/pc8736x_gpio.c
@@ -212,6 +212,7 @@ static struct nsc_gpio_ops pc8736x_gpio_ops = {
.gpio_current = pc8736x_gpio_current
};
+/* No BKL needed here; no global resources accessed */
static int pc8736x_gpio_open(struct inode *inode, struct file *file)
{
unsigned m = iminor(inode);
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index 3aab837d948..ce198757488 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -633,6 +633,7 @@ static int pp_ioctl(struct inode *inode, struct file *file,
return 0;
}
+/* No BKL needed here: only local resources used */
static int pp_open (struct inode * inode, struct file * file)
{
unsigned int minor = iminor(inode);
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 99e5272e3c5..be2c623a986 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -46,6 +46,7 @@ struct nsc_gpio_ops scx200_gpio_ops = {
};
EXPORT_SYMBOL_GPL(scx200_gpio_ops);
+/* No BKL needed here: no global resources used */
static int scx200_gpio_open(struct inode *inode, struct file *file)
{
unsigned m = iminor(inode);
diff --git a/drivers/char/tb0219.c b/drivers/char/tb0219.c
index 4c431cb7cf1..db8c2ca2ce4 100644
--- a/drivers/char/tb0219.c
+++ b/drivers/char/tb0219.c
@@ -232,6 +232,7 @@ static ssize_t tanbac_tb0219_write(struct file *file, const char __user *data,
return i;
}
+/* No BKL needed here; no global resources accessed */
static int tanbac_tb0219_open(struct inode *inode, struct file *file)
{
unsigned int minor;
diff --git a/drivers/char/vr41xx_giu.c b/drivers/char/vr41xx_giu.c
index e5ed09192be..412937fdb95 100644
--- a/drivers/char/vr41xx_giu.c
+++ b/drivers/char/vr41xx_giu.c
@@ -543,6 +543,8 @@ static ssize_t gpio_write(struct file *file, const char __user *data,
return i;
}
+/* No BKL needed here; only global (giu_nr_pins) is only set
+ at probe time */
static int gpio_open(struct inode *inode, struct file *file)
{
unsigned int pin;
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index d7a6881b571..3e6a8ff6d76 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1155,6 +1155,7 @@ static unsigned int ib_ucm_poll(struct file *filp,
return mask;
}
+/* No BKL needed here: no global resources used */
static int ib_ucm_open(struct inode *inode, struct file *filp)
{
struct ib_ucm_file *file;
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index b472b15637f..e80cfbd4f3f 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1812,6 +1812,7 @@ done:
return ret;
}
+/* No BKL needed here */
static int ipath_open(struct inode *in, struct file *fp)
{
/* The real work is performed later in ipath_assign_port() */
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 1f4ca2b54a7..dc8505062da 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -351,6 +351,7 @@ static const int npindex_to_ethertype[NUM_NP] = {
* Open instances of /dev/ppp can be in one of three states:
* unattached, attached to a ppp unit, or attached to a ppp channel.
*/
+/* No BKL needed here */
static int ppp_open(struct inode *inode, struct file *file)
{
/*
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index b31faeccb9c..2239d16fb9b 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -862,6 +862,8 @@ out:
} /* End twa_chrdev_ioctl() */
/* This function handles open for the character device */
+/* NOTE that this function will race with remove; adding BKL
+ will not help. */
static int twa_chrdev_open(struct inode *inode, struct file *file)
{
unsigned int minor_number;
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 8c22329aa85..bbff029536e 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1027,6 +1027,8 @@ out:
} /* End tw_chrdev_ioctl() */
/* This function handles open for the character device */
+/* NOTE that this function races with remove - adding BKL
+ won't help */
static int tw_chrdev_open(struct inode *inode, struct file *file)
{
unsigned int minor_number;
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 18551aaf5e0..c9aa2c45a69 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -3272,8 +3272,9 @@ mega_init_scb(adapter_t *adapter)
* @filep - unused
*
* Routines for the character/ioctl interface to the driver. Find out if this
- * is a valid open. If yes, increment the module use count so that it cannot
- * be unloaded.
+ * is a valid open.
+ *
+ * No BKL needed here.
*/
static int
megadev_open (struct inode *inode, struct file *filep)
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 7d84c8bbcf3..81374b7c555 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -2860,6 +2860,7 @@ static void megasas_shutdown(struct pci_dev *pdev)
/**
* megasas_mgmt_open - char node "open" entry point
+ * No BKL is needed here.
*/
static int megasas_mgmt_open(struct inode *inode, struct file *filep)
{