search for: single_open

...No CONFIG_BKL is an experimental configuration." ^ /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c: In function ?dahdi_proc_open?: /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c:902:2: error: implicit declaration of function ?PDE? [-Werror=implicit-function-declaration] return single_open(file, dahdi_seq_show, PDE(inode)->data); ^ /usr/src/dahdi-linux-2.6.2/drivers/dahdi/dahdi-base.c:902:53: error: invalid type argument of ?->? (have ?int?) return single_open(file, dahdi_seq_show, PDE(inode)->data); ^ /usr/src/dahdi-l...

When using single_open() for opening, single_release() should be used, otherwise there is a memory leak. This is detected by Coccinelle semantic patch. Fixes: 6e9fc177399f ("drm/nouveau/debugfs: add copy of sysfs pstate interface ported to debugfs") Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>...

...time_hypercall(); + seq_printf(m, "Hypercall cycle count: %lld\n", hypercall_cycles); + time_page_fault(); + seq_printf(m, "Kernel #PF cycle count: %lld\n", page_fault_cycles); + + return 0; +} + +static int proc_vmi_info_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_vmi_info_show, NULL); +} + +static struct file_operations proc_vmi_info_operations = { + .open = proc_vmi_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +#define VDEF(call) #call , +static char *vmi_call_name[] = { + VMI_CALLS +}; +#undef V...

...time_hypercall(); + seq_printf(m, "Hypercall cycle count: %lld\n", hypercall_cycles); + time_page_fault(); + seq_printf(m, "Kernel #PF cycle count: %lld\n", page_fault_cycles); + + return 0; +} + +static int proc_vmi_info_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_vmi_info_show, NULL); +} + +static struct file_operations proc_vmi_info_operations = { + .open = proc_vmi_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +#define VDEF(call) #call , +static char *vmi_call_name[] = { + VMI_CALLS +}; +#undef V...

...;state) { + case MIC_ONLINE: + /* Fall through */ + case MIC_SHUTTING_DOWN: + seq_write(s, kva, size); + break; + default: + break; + } + mutex_unlock(&mdev->mic_mutex); + kfree(kva); +done: + return 0; +} + +static int mic_log_buf_open(struct inode *inode, struct file *file) +{ + return single_open(file, mic_log_buf_show, inode->i_private); +} + +static int mic_log_buf_release(struct inode *inode, struct file *file) +{ + return single_release(inode, file); +} + +static const struct file_operations log_buf_ops = { + .owner = THIS_MODULE, + .open = mic_log_buf_open, + .read = seq_rea...

...ret = kstrtou8(buf, 10, &value); + if (ret) + return ret; + + args.mode = value; + ret = nvif_mthd(ctrl, NVIF_CONTROL_BOOST_SET, &args, sizeof(args)); + if (ret) + return ret; + + return len; +} + +static int +nouveau_debugfs_boost_open(struct inode *inode, struct file *file) +{ + return single_open(file, nouveau_debugfs_boost_get, inode->i_private); +} + +static const struct file_operations nouveau_boost_fops = { + .owner = THIS_MODULE, + .open = nouveau_debugfs_boost_open, + .read = seq_read, + .write = nouveau_debugfs_boost_set, +}; + static struct drm_info_list nouveau_debugfs_list[] =...

Reviewed-by: Karol Herbst <kherbst at redhat.com> On Thu, Sep 5, 2019 at 9:14 AM Wei Yongjun <weiyongjun1 at huawei.com> wrote: > > When using single_open() for opening, single_release() should be > used, otherwise there is a memory leak. > > This is detected by Coccinelle semantic patch. > > Fixes: 6e9fc177399f ("drm/nouveau/debugfs: add copy of sysfs pstate interface ported to debugfs") > Signed-off-by: Wei Yongjun <w...

Reviewed-by: Lyude Paul <lyude at redhat.com> Thanks! On Tue, 2020-07-21 at 15:17 +0000, Wei Yongjun wrote: > When using single_open() for opening, single_release() should be > used instead of seq_release(), otherwise there is a memory leak. > > Fixes: 12885ecbfe62 ("drm/nouveau/kms/nvd9-: Add CRC support") > Reported-by: Hulk Robot <hulkci at huawei.com> > Signed-off-by: Wei Yongjun <weiyongju...

...tic int drm_dp_mst_debugfs_state_show(struct seq_file *m, void *data) +{ + drm_dp_mst_dump_topology(m, m->private); + return 0; +} + +static int drm_dp_mst_debugfs_state_open(struct inode *inode, + struct file *file) +{ + struct drm_dp_mst_topology_mgr *mgr = inode->i_private; + + return single_open(file, drm_dp_mst_debugfs_state_show, mgr); +} + +static const struct file_operations drm_dp_mst_debugfs_state_fops = { + .owner = THIS_MODULE, + .open = drm_dp_mst_debugfs_state_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +struct drm_dp_mst_debugfs_init_data...

...->state) { + case MIC_ONLINE: + /* Fall through */ + case MIC_SHUTTING_DOWN: + seq_write(s, kva, size); + break; + default: + break; + } + mutex_unlock(&mdev->mic_mutex); + kfree(kva); +done: + return 0; +} + +static int log_buf_open(struct inode *inode, struct file *file) +{ + return single_open(file, log_buf_seq_show, inode->i_private); +} + +static int log_buf_release(struct inode *inode, struct file *file) +{ + return single_release(inode, file); +} + +static const struct file_operations log_buf_ops = { + .owner = THIS_MODULE, + .open = log_buf_open, + .read = seq_read, + .ll...

I made a little changes in this series: 1. merge the two last patches together 2. unify the private data interface with the drm debugfs one now it should be very obvious for a new dev on how to add new files to debugfs and how to get access to the nouveau structs Karol Herbst (5): debugfs: add infrastructure to add files with other fops than only read debugfs: rename functions to

This is the next version of my patch series for teaching DRM how to automatically create debugfs nodes for drivers with MST topologies. This was originally intended just for nouveau, but has since been expanded to all DRM drivers. Changes since previous version: - Fix documentation error that got noticed by the kbuild bot in "drm/dp_mst: Pass entire connector to

An Intel MIC X100 device is a PCIe form factor add-in coprocessor card based on the Intel Many Integrated Core (MIC) architecture that runs a Linux OS. It is a PCIe endpoint in a platform and therefore implements the three required standard address spaces i.e. configuration, memory and I/O. The host OS loads a device driver as is typical for PCIe devices. The card itself runs a bootstrap after

An Intel MIC X100 device is a PCIe form factor add-in coprocessor card based on the Intel Many Integrated Core (MIC) architecture that runs a Linux OS. It is a PCIe endpoint in a platform and therefore implements the three required standard address spaces i.e. configuration, memory and I/O. The host OS loads a device driver as is typical for PCIe devices. The card itself runs a bootstrap after

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

...ControllerProcEntry; } diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 027b876370bc..429ebb84b592 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -159,14 +159,14 @@ static int aoe_debugfs_open(struct inode *inode, struct file *file) return single_open(file, aoedisk_debugfs_show, inode->i_private); } -static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL); -static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL); -static DEVICE_ATTR(netif, S_IRUGO, aoedisk_show_netif, NULL); +static DEVICE_ATTR(state, 0444, aoedisk_show_state, NULL);...

...ControllerProcEntry; } diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 027b876370bc..429ebb84b592 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -159,14 +159,14 @@ static int aoe_debugfs_open(struct inode *inode, struct file *file) return single_open(file, aoedisk_debugfs_show, inode->i_private); } -static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL); -static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL); -static DEVICE_ATTR(netif, S_IRUGO, aoedisk_show_netif, NULL); +static DEVICE_ATTR(state, 0444, aoedisk_show_state, NULL);...

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)

ChangeLog: ========= v2 => v3: a) Patch 1 data structure cleanups, header file include cleanups, IDA interface reuse and switching to device_create_with_groups(..) as per feedback from Greg Kroah-Hartman. b) Patch 7 signal documentation, sleep workaround removal and sysfs access API cleanups as per feedback from Michael S. Tsirkin. v1 => v2: @ http://lwn.net/Articles/563131/ a)