From: Andrew Morton <akpm@linux-foundation.org>
To: Alex Chiang <achiang@hp.com>
Cc: jbarnes@virtuousgeek.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, Trent Piepho <xyzzy@speakeasy.org>
Subject: Re: [PATCH v4 07/12] PCI: Introduce /sys/bus/pci/rescan
Date: Thu, 19 Mar 2009 02:34:53 -0700 [thread overview]
Message-ID: <20090319023453.7467644a.akpm@linux-foundation.org> (raw)
In-Reply-To: <20090318224001.887.63554.stgit@bob.kio>
On Wed, 18 Mar 2009 16:40:01 -0600 Alex Chiang <achiang@hp.com> wrote:
> +#ifdef CONFIG_HOTPLUG
> +static DEFINE_MUTEX(pci_remove_rescan_mutex);
> +static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
> + size_t count)
> +{
> + unsigned long val;
> + struct pci_bus *b = NULL;
> +
> + if (strict_strtoul(buf, 0, &val) < 0)
> + return -EINVAL;
> +
> + if (!capable(CAP_SYS_ADMIN))
> + return -EPERM;
> +
> + if (val) {
> + mutex_lock(&pci_remove_rescan_mutex);
> + while ((b = pci_find_next_bus(b)) != NULL)
> + pci_rescan_bus(b);
> + mutex_unlock(&pci_remove_rescan_mutex);
> + }
> + return count;
> +}
> +
> +struct bus_attribute pci_bus_attrs[] = {
> + __ATTR(rescan, S_IWUSR, NULL, bus_rescan_store),
> + __ATTR_NULL
> +};
> +#endif
Why CONFIG_HOTPLUG rather than CONFIG_HOTPLUG_PCI (or similar)?
next prev parent reply other threads:[~2009-03-19 9:41 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-18 22:39 [PATCH v4 00/12] PCI core learns hotplug Alex Chiang
2009-03-18 22:39 ` [PATCH v4 01/12] PCI: pci_is_root_bus helper Alex Chiang
2009-03-18 22:39 ` [PATCH v4 02/12] PCI: don't scan existing devices Alex Chiang
2009-03-18 22:39 ` [PATCH v4 03/12] PCI: pci_scan_slot() returns newly found devices Alex Chiang
2009-03-18 22:39 ` [PATCH v4 04/12] PCI: always scan child buses Alex Chiang
2009-03-18 22:39 ` [PATCH v4 05/12] PCI: do not initialize bridges more than once Alex Chiang
2009-03-18 22:39 ` [PATCH v4 06/12] PCI: Introduce pci_rescan_bus() Alex Chiang
2009-03-19 9:27 ` Andrew Morton
2009-03-19 17:05 ` Alex Chiang
2009-03-19 17:42 ` Greg KH
2009-03-19 17:49 ` Alex Chiang
2009-03-19 18:09 ` Matthew Wilcox
2009-03-19 18:09 ` Greg KH
2009-03-19 9:29 ` Andrew Morton
2009-03-19 17:11 ` Alex Chiang
2009-03-18 22:40 ` [PATCH v4 07/12] PCI: Introduce /sys/bus/pci/rescan Alex Chiang
2009-03-19 9:34 ` Andrew Morton [this message]
2009-03-19 17:11 ` Alex Chiang
2009-03-19 22:55 ` Trent Piepho
2009-03-19 23:21 ` Alex Chiang
2009-03-18 22:40 ` [PATCH v4 08/12] PCI: Introduce /sys/bus/pci/devices/.../remove Alex Chiang
2009-03-19 9:43 ` Andrew Morton
2009-03-19 16:06 ` Greg KH
2009-03-19 16:30 ` Alex Chiang
2009-03-19 14:17 ` Kenji Kaneshige
2009-03-19 16:41 ` Alex Chiang
2009-03-19 20:43 ` Trent Piepho
2009-03-19 20:46 ` Alex Chiang
2009-03-19 23:19 ` Kenji Kaneshige
2009-03-20 3:53 ` Alex Chiang
2009-03-18 22:40 ` [PATCH v4 09/12] PCI: Introduce /sys/bus/pci/devices/.../rescan Alex Chiang
2009-03-18 22:40 ` [PATCH v4 10/12] PCI Hotplug: restore fakephp interface with complete reimplementation Alex Chiang
2009-03-19 9:45 ` Andrew Morton
2009-03-19 17:00 ` Alex Chiang
2009-03-19 19:24 ` Trent Piepho
2009-03-18 22:40 ` [PATCH v4 11/12] PCI Hotplug: rename legacy_fakephp to fakephp Alex Chiang
2009-03-18 22:40 ` [PATCH v4 12/12] PCI Hotplug: schedule fakephp for feature removal Alex Chiang
2009-03-19 8:12 ` [PATCH v4 00/12] PCI core learns hotplug Kenji Kaneshige
2009-03-19 17:07 ` Alex Chiang
2009-03-20 4:15 ` Alex Chiang
2009-03-19 14:09 ` Kenji Kaneshige
2009-03-19 17:13 ` Alex Chiang
2009-03-20 5:16 ` Alex Chiang
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