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intel_th: Fixes -stable

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These are:
  * a fix for a modprobe time deadlock
  * a new PCI ID for Kaby Lake PCH-H
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Merge tag 'stm-for-greg-20160714' of git://git.kernel.org/pub/scm/linux/kernel/git/ash/stm into char-misc-next

Alexander writes:

intel_th: Fixes -t://git.kernel.org/pub/scm/linux/kernel/git/ash/stm.git
tags/stm-for-greg-20160714
stable

These are:
 * a fix for a modprobe time deadlock
 * a new PCI ID for Kaby Lake PCH-H
This commit is contained in:
Greg Kroah-Hartman 2016-07-15 14:19:11 +09:00
commit 80f7631963
3 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/hwtracing/intel_th/core.c
View File

@ -490,6 +490,38 @@ static struct intel_th_subdevice {
},
};
#ifdef CONFIG_MODULES
static void __intel_th_request_hub_module(struct work_struct *work)
{
struct intel_th *th = container_of(work, struct intel_th,
request_module_work);
request_module("intel_th_%s", th->hub->name);
}
static int intel_th_request_hub_module(struct intel_th *th)
{
INIT_WORK(&th->request_module_work, __intel_th_request_hub_module);
schedule_work(&th->request_module_work);
return 0;
}
static void intel_th_request_hub_module_flush(struct intel_th *th)
{
flush_work(&th->request_module_work);
}
#else
static inline int intel_th_request_hub_module(struct intel_th *th)
{
return -EINVAL;
}
static inline void intel_th_request_hub_module_flush(struct intel_th *th)
{
}
#endif /* CONFIG_MODULES */
static int intel_th_populate(struct intel_th *th, struct resource *devres,
unsigned int ndevres, int irq)
{
@ -560,7 +592,7 @@ static int intel_th_populate(struct intel_th *th, struct resource *devres,
/* need switch driver to be loaded to enumerate the rest */
if (subdev->type == INTEL_TH_SWITCH && !req) {
th->hub = thdev;
err = request_module("intel_th_%s", subdev->name);
err = intel_th_request_hub_module(th);
if (!err)
req++;
}
@ -683,6 +715,7 @@ void intel_th_free(struct intel_th *th)
{
int i;
intel_th_request_hub_module_flush(th);
for (i = 0; i < TH_SUBDEVICE_MAX; i++)
if (th->thdev[i] != th->hub)
intel_th_device_remove(th->thdev[i]);

3
drivers/hwtracing/intel_th/intel_th.h
View File

@ -208,6 +208,9 @@ struct intel_th {
int id;
int major;
#ifdef CONFIG_MODULES
struct work_struct request_module_work;
#endif /* CONFIG_MODULES */
#ifdef CONFIG_INTEL_TH_DEBUG
struct dentry *dbg;
#endif

5
drivers/hwtracing/intel_th/pci.c
View File

@ -80,6 +80,11 @@ static const struct pci_device_id intel_th_pci_id_table[] = {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1a8e),
.driver_data = (kernel_ulong_t)0,
},
{
/* Kaby Lake PCH-H */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
.driver_data = (kernel_ulong_t)0,
},
{ 0 },
};