Merge "diag: Modify md_info and diag client map synchronization" (f524c1d3) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/diag/diag_memorydevice.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -192,6 +192,7 @@ int diag_md_write(int id, unsigned char *buf, int len, int ctx)
		}

		found = 0;
		mutex_lock(&driver->diagchar_mutex);
		for (i = 0; i < driver->num_clients && !found; i++) {
		if ((driver->client_map[i].pid != pid) \|\|
		(driver->client_map[i].pid == 0))
		@@ -202,6 +203,7 @@ int diag_md_write(int id, unsigned char *buf, int len, int ctx)
		pr_debug("diag: wake up logging process\n");
		wake_up_interruptible(&driver->wait_q);
		}
		mutex_unlock(&driver->diagchar_mutex);

		if (!found)
		return -EINVAL;

+6 −4

Original line number	Diff line number	Diff line
		@@ -307,24 +307,26 @@ static void diagfwd_data_read_done(struct diagfwd_info *fwd_info,
		}
		}

		mutex_unlock(&fwd_info->data_mutex);
		mutex_unlock(&driver->hdlc_disable_mutex);

		if (write_len > 0) {
		err = diag_mux_write(DIAG_LOCAL_PROC, write_buf, write_len,
		temp_buf->ctxt);
		if (err) {
		pr_err_ratelimited("diag: In %s, unable to write to mux error: %d\n",
		__func__, err);
		goto end;
		goto end_write;
		}
		}
		mutex_unlock(&fwd_info->data_mutex);
		mutex_unlock(&driver->hdlc_disable_mutex);
		diagfwd_queue_read(fwd_info);
		return;

		end:
		diag_ws_release();
		mutex_unlock(&fwd_info->data_mutex);
		mutex_unlock(&driver->hdlc_disable_mutex);
		end_write:
		diag_ws_release();
		if (temp_buf) {
		diagfwd_write_done(fwd_info->peripheral, fwd_info->type,
		GET_BUF_NUM(temp_buf->ctxt));