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qmi_wwan: extend permitted QMAP mux_id value range
[ Upstream commit36815b416f
] Permit mux_id values up to 254 to be used in qmimux_register_device() for compatibility with ip(8) and the rmnet driver. Fixes:c6adf77953
("net: usb: qmi_wwan: add qmap mux protocol support") Cc: Daniele Palmas <dnlplm@gmail.com> Signed-off-by: Reinhard Speyerer <rspmn@arcor.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
4f8544dd54
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2 changed files with 4 additions and 4 deletions
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@ -29,7 +29,7 @@ Contact: Bjørn Mork <bjorn@mork.no>
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Description:
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Description:
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Unsigned integer.
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Unsigned integer.
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Write a number ranging from 1 to 127 to add a qmap mux
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Write a number ranging from 1 to 254 to add a qmap mux
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based network device, supported by recent Qualcomm based
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based network device, supported by recent Qualcomm based
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modems.
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modems.
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@ -46,5 +46,5 @@ Contact: Bjørn Mork <bjorn@mork.no>
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Description:
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Description:
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Unsigned integer.
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Unsigned integer.
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Write a number ranging from 1 to 127 to delete a previously
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Write a number ranging from 1 to 254 to delete a previously
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created qmap mux based network device.
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created qmap mux based network device.
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@ -363,8 +363,8 @@ static ssize_t add_mux_store(struct device *d, struct device_attribute *attr, c
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if (kstrtou8(buf, 0, &mux_id))
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if (kstrtou8(buf, 0, &mux_id))
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return -EINVAL;
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return -EINVAL;
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/* mux_id [1 - 0x7f] range empirically found */
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/* mux_id [1 - 254] for compatibility with ip(8) and the rmnet driver */
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if (mux_id < 1 || mux_id > 0x7f)
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if (mux_id < 1 || mux_id > 254)
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return -EINVAL;
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return -EINVAL;
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if (!rtnl_trylock())
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if (!rtnl_trylock())
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