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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-25 23:06:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-25 23:06:24 -0700
commitf0deb97ab13ad1f89cd0993f7339655d59788405 (patch)
tree41572e643cb4983115707ae330b5896ae76e1ea1 /drivers
parent184475029a724b6b900d88fc3a5f462a6107d5af (diff)
parent21d541aa19e90752232bf6c43002f019f204f988 (diff)
Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: updated Documentation/ja_JP/SubmittingPatches debugfs: add documentation for debugfs_create_x64 uio: uio_pdrv_genirq: Add OF support firmware: gsmi: remove sysfs entries when unload the module Documentation/zh_CN: Fix messy code file email-clients.txt driver core: add more help description for "path to uevent helper" driver-core: modify FIRMWARE_IN_KERNEL help message driver-core: Kconfig grammar corrections in firmware configuration DOCUMENTATION: Replace create_device() with device_create(). DOCUMENTATION: Update overview.txt in Doc/driver-model. pti: pti_tty_install documentation mispelling.
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/Kconfig64
-rw-r--r--drivers/firmware/google/gsmi.c19
-rw-r--r--drivers/misc/pti.c6
-rw-r--r--drivers/uio/uio_pdrv_genirq.c43
4 files changed, 93 insertions, 39 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index b605d01f5d4..21cf46f4524 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -16,6 +16,11 @@ config UEVENT_HELPER_PATH
that it creates a high system load, or on smaller systems
it is known to create out-of-memory situations during bootup.
+ To disable user space helper program execution at early boot
+ time specify an empty string here. This setting can be altered
+ via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
+ later at runtime.
+
config DEVTMPFS
bool "Maintain a devtmpfs filesystem to mount at /dev"
depends on HOTPLUG
@@ -65,17 +70,17 @@ config PREVENT_FIRMWARE_BUILD
default y
help
Say yes to avoid building firmware. Firmware is usually shipped
- with the driver, and only when updating the firmware a rebuild
- should be made.
- If unsure say Y here.
+ with the driver and only when updating the firmware should a
+ rebuild be made.
+ If unsure, say Y here.
config FW_LOADER
tristate "Userspace firmware loading support" if EXPERT
default y
---help---
- This option is provided for the case where no in-kernel-tree modules
- require userspace firmware loading support, but a module built outside
- the kernel tree does.
+ This option is provided for the case where none of the in-tree modules
+ require userspace firmware loading support, but a module built
+ out-of-tree does.
config FIRMWARE_IN_KERNEL
bool "Include in-kernel firmware blobs in kernel binary"
@@ -83,22 +88,22 @@ config FIRMWARE_IN_KERNEL
default y
help
The kernel source tree includes a number of firmware 'blobs'
- which are used by various drivers. The recommended way to
- use these is to run "make firmware_install" and to copy the
- resulting binary files created in usr/lib/firmware directory
- of the kernel tree to the /lib/firmware on your system so
+ that are used by various drivers. The recommended way to
+ use these is to run "make firmware_install", which, after
+ converting ihex files to binary, copies all of the needed
+ binary files in firmware/ to /lib/firmware/ on your system so
that they can be loaded by userspace helpers on request.
Enabling this option will build each required firmware blob
into the kernel directly, where request_firmware() will find
them without having to call out to userspace. This may be
- useful if your root file system requires a device which uses
- such firmware, and do not wish to use an initrd.
+ useful if your root file system requires a device that uses
+ such firmware and do not wish to use an initrd.
This single option controls the inclusion of firmware for
- every driver which uses request_firmware() and ships its
- firmware in the kernel source tree, to avoid a proliferation
- of 'Include firmware for xxx device' options.
+ every driver that uses request_firmware() and ships its
+ firmware in the kernel source tree, which avoids a
+ proliferation of 'Include firmware for xxx device' options.
Say 'N' and let firmware be loaded from userspace.
@@ -106,27 +111,27 @@ config EXTRA_FIRMWARE
string "External firmware blobs to build into the kernel binary"
depends on FW_LOADER
help
- This option allows firmware to be built into the kernel, for the
- cases where the user either cannot or doesn't want to provide it from
+ This option allows firmware to be built into the kernel for the case
+ where the user either cannot or doesn't want to provide it from
userspace at runtime (for example, when the firmware in question is
required for accessing the boot device, and the user doesn't want to
use an initrd).
- This option is a string, and takes the (space-separated) names of the
- firmware files -- the same names which appear in MODULE_FIRMWARE()
+ This option is a string and takes the (space-separated) names of the
+ firmware files -- the same names that appear in MODULE_FIRMWARE()
and request_firmware() in the source. These files should exist under
the directory specified by the EXTRA_FIRMWARE_DIR option, which is
- by default the firmware/ subdirectory of the kernel source tree.
+ by default the firmware subdirectory of the kernel source tree.
- So, for example, you might set CONFIG_EXTRA_FIRMWARE="usb8388.bin",
- copy the usb8388.bin file into the firmware/ directory, and build the
- kernel. Then any request_firmware("usb8388.bin") will be
- satisfied internally without needing to call out to userspace.
+ For example, you might set CONFIG_EXTRA_FIRMWARE="usb8388.bin", copy
+ the usb8388.bin file into the firmware directory, and build the kernel.
+ Then any request_firmware("usb8388.bin") will be satisfied internally
+ without needing to call out to userspace.
WARNING: If you include additional firmware files into your binary
- kernel image which are not available under the terms of the GPL,
+ kernel image that are not available under the terms of the GPL,
then it may be a violation of the GPL to distribute the resulting
- image -- since it combines both GPL and non-GPL work. You should
+ image since it combines both GPL and non-GPL work. You should
consult a lawyer of your own before distributing such an image.
config EXTRA_FIRMWARE_DIR
@@ -136,10 +141,9 @@ config EXTRA_FIRMWARE_DIR
help
This option controls the directory in which the kernel build system
looks for the firmware files listed in the EXTRA_FIRMWARE option.
- The default is the firmware/ directory in the kernel source tree,
- but by changing this option you can point it elsewhere, such as
- the /lib/firmware/ directory or another separate directory
- containing firmware files.
+ The default is firmware/ in the kernel source tree, but by changing
+ this option you can point it elsewhere, such as /lib/firmware/ or
+ some other directory containing the firmware files.
config DEBUG_DRIVER
bool "Driver Core verbose debug messages"
diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
index fa7f0b3e81d..68810fd1a59 100644
--- a/drivers/firmware/google/gsmi.c
+++ b/drivers/firmware/google/gsmi.c
@@ -869,8 +869,6 @@ static __init int gsmi_init(void)
goto out_err;
}
- printk(KERN_INFO "gsmi version " DRIVER_VERSION " loaded\n");
-
/* Register in the firmware directory */
ret = -ENOMEM;
gsmi_kobj = kobject_create_and_add("gsmi", firmware_kobj);
@@ -890,12 +888,13 @@ static __init int gsmi_init(void)
ret = sysfs_create_files(gsmi_kobj, gsmi_attrs);
if (ret) {
printk(KERN_INFO "gsmi: Failed to add attrs");
- goto out_err;
+ goto out_remove_bin_file;
}
- if (register_efivars(&efivars, &efivar_ops, gsmi_kobj)) {
+ ret = register_efivars(&efivars, &efivar_ops, gsmi_kobj);
+ if (ret) {
printk(KERN_INFO "gsmi: Failed to register efivars\n");
- goto out_err;
+ goto out_remove_sysfs_files;
}
register_reboot_notifier(&gsmi_reboot_notifier);
@@ -903,9 +902,15 @@ static __init int gsmi_init(void)
atomic_notifier_chain_register(&panic_notifier_list,
&gsmi_panic_notifier);
+ printk(KERN_INFO "gsmi version " DRIVER_VERSION " loaded\n");
+
return 0;
- out_err:
+out_remove_sysfs_files:
+ sysfs_remove_files(gsmi_kobj, gsmi_attrs);
+out_remove_bin_file:
+ sysfs_remove_bin_file(gsmi_kobj, &eventlog_bin_attr);
+out_err:
kobject_put(gsmi_kobj);
gsmi_buf_free(gsmi_dev.param_buf);
gsmi_buf_free(gsmi_dev.data_buf);
@@ -925,6 +930,8 @@ static void __exit gsmi_exit(void)
&gsmi_panic_notifier);
unregister_efivars(&efivars);
+ sysfs_remove_files(gsmi_kobj, gsmi_attrs);
+ sysfs_remove_bin_file(gsmi_kobj, &eventlog_bin_attr);
kobject_put(gsmi_kobj);
gsmi_buf_free(gsmi_dev.param_buf);
gsmi_buf_free(gsmi_dev.data_buf);
diff --git a/drivers/misc/pti.c b/drivers/misc/pti.c
index 374dfcfccd0..e5f295a38a3 100644
--- a/drivers/misc/pti.c
+++ b/drivers/misc/pti.c
@@ -445,9 +445,9 @@ static void pti_tty_driver_close(struct tty_struct *tty, struct file *filp)
}
/**
- * pti_tty_intstall()- Used to set up specific master-channels
- * to tty ports for organizational purposes when
- * tracing viewed from debuging tools.
+ * pti_tty_install()- Used to set up specific master-channels
+ * to tty ports for organizational purposes when
+ * tracing viewed from debuging tools.
*
* @driver: tty driver information.
* @tty: tty struct containing pti information.
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index 31e799d9efe..bae96d24676 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -23,6 +23,10 @@
#include <linux/pm_runtime.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+
#define DRIVER_NAME "uio_pdrv_genirq"
struct uio_pdrv_genirq_platdata {
@@ -97,6 +101,27 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
int ret = -EINVAL;
int i;
+ if (!uioinfo) {
+ int irq;
+
+ /* alloc uioinfo for one device */
+ uioinfo = kzalloc(sizeof(*uioinfo), GFP_KERNEL);
+ if (!uioinfo) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "unable to kmalloc\n");
+ goto bad2;
+ }
+ uioinfo->name = pdev->dev.of_node->name;
+ uioinfo->version = "devicetree";
+
+ /* Multiple IRQs are not supported */
+ irq = platform_get_irq(pdev, 0);
+ if (irq == -ENXIO)
+ uioinfo->irq = UIO_IRQ_NONE;
+ else
+ uioinfo->irq = irq;
+ }
+
if (!uioinfo || !uioinfo->name || !uioinfo->version) {
dev_err(&pdev->dev, "missing platform_data\n");
goto bad0;
@@ -180,6 +205,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
kfree(priv);
pm_runtime_disable(&pdev->dev);
bad0:
+ /* kfree uioinfo for OF */
+ if (pdev->dev.of_node)
+ kfree(uioinfo);
+ bad2:
return ret;
}
@@ -193,6 +222,10 @@ static int uio_pdrv_genirq_remove(struct platform_device *pdev)
priv->uioinfo->handler = NULL;
priv->uioinfo->irqcontrol = NULL;
+ /* kfree uioinfo for OF */
+ if (pdev->dev.of_node)
+ kfree(priv->uioinfo);
+
kfree(priv);
return 0;
}
@@ -219,6 +252,15 @@ static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = {
.runtime_resume = uio_pdrv_genirq_runtime_nop,
};
+#ifdef CONFIG_OF
+static const struct of_device_id __devinitconst uio_of_genirq_match[] = {
+ { /* empty for now */ },
+};
+MODULE_DEVICE_TABLE(of, uio_of_genirq_match);
+#else
+# define uio_of_genirq_match NULL
+#endif
+
static struct platform_driver uio_pdrv_genirq = {
.probe = uio_pdrv_genirq_probe,
.remove = uio_pdrv_genirq_remove,
@@ -226,6 +268,7 @@ static struct platform_driver uio_pdrv_genirq = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.pm = &uio_pdrv_genirq_dev_pm_ops,
+ .of_match_table = uio_of_genirq_match,
},
};