[Intel-gfx] [PATCH v3 10/40] misc/mei/hdcp: Verify H_prime
kbuild test robot
lkp at intel.com
Tue Apr 3 22:12:21 UTC 2018
Hi Ramalingam,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on next-20180403]
[cannot apply to v4.16]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Ramalingam-C/drm-i915-Implement-HDCP2-2/20180404-031743
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/misc/mei/hdcp/mei_hdcp.c:52:5: error: redefinition of 'mei_initiate_hdcp2_session'
int mei_initiate_hdcp2_session(struct mei_cl_device *cldev,
^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/misc/mei/hdcp/mei_hdcp.c:35:0:
include/linux/mei_hdcp.h:131:5: note: previous definition of 'mei_initiate_hdcp2_session' was here
int mei_initiate_hdcp2_session(struct mei_cl_device *cldev,
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/mei/hdcp/mei_hdcp.c:122:1: error: redefinition of 'mei_verify_receiver_cert_prepare_km'
mei_verify_receiver_cert_prepare_km(struct mei_cl_device *cldev,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/misc/mei/hdcp/mei_hdcp.c:35:0:
include/linux/mei_hdcp.h:138:1: note: previous definition of 'mei_verify_receiver_cert_prepare_km' was here
mei_verify_receiver_cert_prepare_km(struct mei_cl_device *cldev,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/misc/mei/hdcp/mei_hdcp.c:200:5: error: redefinition of 'mei_verify_hprime'
int mei_verify_hprime(struct mei_cl_device *cldev, struct mei_hdcp_data *data,
^~~~~~~~~~~~~~~~~
In file included from drivers/misc/mei/hdcp/mei_hdcp.c:35:0:
include/linux/mei_hdcp.h:148:5: note: previous definition of 'mei_verify_hprime' was here
int mei_verify_hprime(struct mei_cl_device *cldev, struct mei_hdcp_data *data,
^~~~~~~~~~~~~~~~~
drivers/misc/mei/hdcp/mei_hdcp.c:257:5: error: redefinition of 'mei_cldev_register_notify'
int mei_cldev_register_notify(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/misc/mei/hdcp/mei_hdcp.c:35:0:
include/linux/mei_hdcp.h:122:12: note: previous definition of 'mei_cldev_register_notify' was here
static int mei_cldev_register_notify(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/mei/hdcp/mei_hdcp.c:263:5: error: redefinition of 'mei_cldev_unregister_notify'
int mei_cldev_unregister_notify(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/misc/mei/hdcp/mei_hdcp.c:35:0:
include/linux/mei_hdcp.h:126:12: note: previous definition of 'mei_cldev_unregister_notify' was here
static int mei_cldev_unregister_notify(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/mei_hdcp.h:126:12: warning: 'mei_cldev_unregister_notify' defined but not used [-Wunused-function]
include/linux/mei_hdcp.h:122:12: warning: 'mei_cldev_register_notify' defined but not used [-Wunused-function]
static int mei_cldev_register_notify(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~
vim +/mei_verify_hprime +200 drivers/misc/mei/hdcp/mei_hdcp.c
106
107 /**
108 * mei_verify_receiver_cert_prepare_km:
109 * Function to verify the Receiver Certificate AKE_Send_Cert
110 * and prepare AKE_Stored_Km or AKE_No_Stored_Km
111 *
112 * @cldev : Pointer for mei client device
113 * @data : Intel HW specific Data
114 * @rx_cert : Pointer for AKE_Send_Cert
115 * @km_stored : Pointer for pairing status flag
116 * @ek_pub_km : Pointer for output msg
117 * @msg_sz : Pointer for size of AKE_XXXXX_Km
118 *
119 * Returns 0 on Success, <0 on Failure
120 */
121 int
> 122 mei_verify_receiver_cert_prepare_km(struct mei_cl_device *cldev,
123 struct mei_hdcp_data *data,
124 struct hdcp2_ake_send_cert *rx_cert,
125 bool *km_stored,
126 struct hdcp2_ake_no_stored_km *ek_pub_km,
127 size_t *msg_sz)
128 {
129 struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = { { 0 } };
130 struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = { { 0 } };
131 struct device *dev;
132 ssize_t byte;
133
134 if (!data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz)
135 return -EINVAL;
136
137 dev = &cldev->dev;
138
139 verify_rxcert_in.header.api_version = HDCP_API_VERSION;
140 verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT;
141 verify_rxcert_in.header.status = ME_HDCP_STATUS_SUCCESS;
142 verify_rxcert_in.header.buffer_len =
143 WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
144
145 verify_rxcert_in.port.integrated_port_type = data->port_type;
146 verify_rxcert_in.port.physical_port = data->port;
147
148 memcpy(&verify_rxcert_in.cert_rx, &rx_cert->cert_rx,
149 sizeof(rx_cert->cert_rx));
150 memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, sizeof(rx_cert->r_rx));
151 memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN);
152
153 byte = mei_cldev_send(cldev, (u8 *)&verify_rxcert_in,
154 sizeof(verify_rxcert_in));
155 if (byte < 0) {
156 dev_dbg(dev, "mei_cldev_send failed: %d\n", (int)byte);
157 return byte;
158 }
159
160 byte = mei_cldev_recv(cldev, (u8 *)&verify_rxcert_out,
161 sizeof(verify_rxcert_out));
162 if (byte < 0) {
163 dev_dbg(dev, "mei_cldev_recv failed: %d\n", (int)byte);
164 return byte;
165 }
166
167 if (verify_rxcert_out.header.status != ME_HDCP_STATUS_SUCCESS) {
168 dev_dbg(dev, "ME cmd 0x%08X Failed. Status: 0x%X\n",
169 WIRED_VERIFY_RECEIVER_CERT,
170 verify_rxcert_out.header.status);
171 return -1;
172 }
173
174 *km_stored = verify_rxcert_out.km_stored;
175 if (verify_rxcert_out.km_stored) {
176 ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM;
177 *msg_sz = sizeof(struct hdcp2_ake_stored_km);
178 } else {
179 ek_pub_km->msg_id = HDCP_2_2_AKE_NO_STORED_KM;
180 *msg_sz = sizeof(struct hdcp2_ake_no_stored_km);
181 }
182
183 memcpy(ek_pub_km->e_kpub_km, &verify_rxcert_out.ekm_buff,
184 sizeof(verify_rxcert_out.ekm_buff));
185 return 0;
186 }
187 EXPORT_SYMBOL(mei_verify_receiver_cert_prepare_km);
188
189 /**
190 * mei_verify_hprime:
191 * Function to verify AKE_Send_H_prime received
192 *
193 * @cldev : Pointer for mei client device
194 * @data : Intel HW specific Data
195 * @rx_hprime : Pointer for AKE_Send_H_prime
196 * @hprime_sz : Input buffer size
197 *
198 * Returns 0 on Success, <0 on Failure
199 */
> 200 int mei_verify_hprime(struct mei_cl_device *cldev, struct mei_hdcp_data *data,
201 struct hdcp2_ake_send_hprime *rx_hprime)
202 {
203 struct wired_cmd_ake_send_hprime_in send_hprime_in = { { 0 } };
204 struct wired_cmd_ake_send_hprime_out send_hprime_out = { { 0 } };
205 struct device *dev;
206 ssize_t byte;
207
208 if (!data || !rx_hprime)
209 return -EINVAL;
210
211 dev = &cldev->dev;
212
213 send_hprime_in.header.api_version = HDCP_API_VERSION;
214 send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME;
215 send_hprime_in.header.status = ME_HDCP_STATUS_SUCCESS;
216 send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
217
218 send_hprime_in.port.integrated_port_type = data->port_type;
219 send_hprime_in.port.physical_port = data->port;
220
221 memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
222 sizeof(rx_hprime->h_prime));
223
224 byte = mei_cldev_send(cldev, (u8 *)&send_hprime_in,
225 sizeof(send_hprime_in));
226 if (byte < 0) {
227 dev_dbg(dev, "mei_cldev_send failed. %d\n", (int)byte);
228 return byte;
229 }
230
231 byte = mei_cldev_recv(cldev, (u8 *)&send_hprime_out,
232 sizeof(send_hprime_out));
233 if (byte < 0) {
234 dev_dbg(dev, "mei_cldev_recv failed. %d\n", (int)byte);
235 return byte;
236 }
237
238 if (send_hprime_out.header.status != ME_HDCP_STATUS_SUCCESS) {
239 dev_dbg(dev, "ME cmd 0x%08X Failed. Status: 0x%X\n",
240 WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status);
241 return -1;
242 }
243 return 0;
244 }
245 EXPORT_SYMBOL(mei_verify_hprime);
246
---
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