diff options
| author |   Johan Hovold <johan@kernel.org> | 2017-03-30 12:15:38 +0200 |
|---|---|---|
| committer |   Samuel Ortiz <sameo@linux.intel.com> | 2017-06-18 23:57:59 +0200 |
| commit | e5834ac22948169bbd7c45996d8d4905edd20f5e (patch) | |
| tree | 0fd0eedd0e8e5da394b41cbfb7fcb97d4a3f2604 /drivers/nfc/nfcmrvl | |
| parent | NFC: nfcmrvl: do not use device-managed resources (diff) | |
| download | linux-dev-e5834ac22948169bbd7c45996d8d4905edd20f5e.tar.xz linux-dev-e5834ac22948169bbd7c45996d8d4905edd20f5e.zip | |
NFC: nfcmrvl: use nfc-device for firmware download
Use the nfc- rather than phy-device in firmware-management code that
needs a valid struct device.
This specifically fixes a NULL-pointer dereference in
nfcmrvl_fw_dnld_init() during registration when the underlying tty is
one end of a Unix98 pty.
Note that the driver still uses the phy device for any debugging, which
is fine for now.
Fixes: 3194c6870158 ("NFC: nfcmrvl: add firmware download support")
Cc: stable <stable@vger.kernel.org> # 4.4
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc/nfcmrvl')
| -rw-r--r-- | drivers/nfc/nfcmrvl/fw_dnld.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/nfc/nfcmrvl/fw_dnld.c b/drivers/nfc/nfcmrvl/fw_dnld.c index f9f000c546d1..7f8960a46aab 100644 --- a/drivers/nfc/nfcmrvl/fw_dnld.c +++ b/drivers/nfc/nfcmrvl/fw_dnld.c @@ -457,7 +457,7 @@ int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv) INIT_WORK(&priv->fw_dnld.rx_work, fw_dnld_rx_work); snprintf(name, sizeof(name), "%s_nfcmrvl_fw_dnld_rx_wq", - dev_name(priv->dev)); + dev_name(&priv->ndev->nfc_dev->dev)); priv->fw_dnld.rx_wq = create_singlethread_workqueue(name); if (!priv->fw_dnld.rx_wq) return -ENOMEM; @@ -494,6 +494,7 @@ int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name) { struct nfcmrvl_private *priv = nci_get_drvdata(ndev); struct nfcmrvl_fw_dnld *fw_dnld = &priv->fw_dnld; + int res; if (!priv->support_fw_dnld) return -ENOTSUPP; @@ -509,7 +510,9 @@ int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name) */ /* Retrieve FW binary */ - if (request_firmware(&fw_dnld->fw, firmware_name, priv->dev) < 0) { + res = request_firmware(&fw_dnld->fw, firmware_name, + &ndev->nfc_dev->dev); + if (res < 0) { nfc_err(priv->dev, "failed to retrieve FW %s", firmware_name); return -ENOENT; } |