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bfb7bac3a8
When preparing ethtool drvinfo, check if wiphy driver is defined before dereferencing it. Driver may not exist, e.g. if wiphy is attached to a virtual platform device. Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com> Link: https://lore.kernel.org/r/20200203105644.28875-1-sergey.matyukevich.os@quantenna.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
30 lines
843 B
C
30 lines
843 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/utsname.h>
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#include <net/cfg80211.h>
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#include "core.h"
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#include "rdev-ops.h"
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void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct device *pdev = wiphy_dev(wdev->wiphy);
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if (pdev->driver)
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strlcpy(info->driver, pdev->driver->name,
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sizeof(info->driver));
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else
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strlcpy(info->driver, "N/A", sizeof(info->driver));
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strlcpy(info->version, init_utsname()->release, sizeof(info->version));
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if (wdev->wiphy->fw_version[0])
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strlcpy(info->fw_version, wdev->wiphy->fw_version,
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sizeof(info->fw_version));
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else
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strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
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strlcpy(info->bus_info, dev_name(wiphy_dev(wdev->wiphy)),
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sizeof(info->bus_info));
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}
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EXPORT_SYMBOL(cfg80211_get_drvinfo);
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