usb-bus: fix no params

After commit 702f3e0fb52c124c07f215426eeadb70a716643f, the params is
nerver NULL. It should check *params instead of params to determine
whether the params is empty.

Signed-off-by: TeLeMan <geleman@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
1 file changed
tree: 373427d1d4e219c3f0f41fd4b47162c611347ce4
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. gdb-xml/
  9. hw/
  10. linux-user/
  11. net/
  12. pc-bios/
  13. QMP/
  14. roms/
  15. slirp/
  16. sysconfigs/
  17. target-alpha/
  18. target-arm/
  19. target-cris/
  20. target-i386/
  21. target-m68k/
  22. target-microblaze/
  23. target-mips/
  24. target-ppc/
  25. target-s390x/
  26. target-sh4/
  27. target-sparc/
  28. tcg/
  29. tests/
  30. .gitignore
  31. .gitmodules
  32. a.out.h
  33. acl.c
  34. acl.h
  35. aes.c
  36. aes.h
  37. aio.c
  38. alpha-dis.c
  39. alpha.ld
  40. arch_init.c
  41. arch_init.h
  42. arm-dis.c
  43. arm-semi.c
  44. arm.ld
  45. async.c
  46. balloon.h
  47. block-migration.c
  48. block-migration.h
  49. block.c
  50. block.h
  51. block_int.h
  52. bswap.h
  53. bt-host.c
  54. bt-host.h
  55. bt-vhci.c
  56. buffered_file.c
  57. buffered_file.h
  58. cache-utils.c
  59. cache-utils.h
  60. Changelog
  61. check-qdict.c
  62. check-qfloat.c
  63. check-qint.c
  64. check-qjson.c
  65. check-qlist.c
  66. check-qstring.c
  67. cmd.c
  68. cmd.h
  69. cocoa.m
  70. CODING_STYLE
  71. config.h
  72. configure
  73. console.c
  74. console.h
  75. COPYING
  76. COPYING.LIB
  77. cpu-all.h
  78. cpu-common.h
  79. cpu-defs.h
  80. cpu-exec.c
  81. cpus.c
  82. cpus.h
  83. create_config
  84. cris-dis.c
  85. curses.c
  86. curses_keys.h
  87. cutils.c
  88. d3des.c
  89. d3des.h
  90. def-helper.h
  91. device_tree.c
  92. device_tree.h
  93. dis-asm.h
  94. disas.c
  95. disas.h
  96. dma-helpers.c
  97. dma.h
  98. dyngen-exec.h
  99. elf.h
  100. envlist.c
  101. envlist.h
  102. exec-all.h
  103. exec.c
  104. feature_to_c.sh
  105. gdbstub.c
  106. gdbstub.h
  107. gen-icount.h
  108. host-utils.c
  109. host-utils.h
  110. hpet.h
  111. hppa-dis.c
  112. hppa.ld
  113. hxtool
  114. i386-dis.c
  115. i386.ld
  116. ia64-dis.c
  117. ia64.ld
  118. input.c
  119. ioport-user.c
  120. ioport.c
  121. ioport.h
  122. json-lexer.c
  123. json-lexer.h
  124. json-parser.c
  125. json-parser.h
  126. json-streamer.c
  127. json-streamer.h
  128. keymaps.c
  129. keymaps.h
  130. kvm-all.c
  131. kvm.h
  132. libfdt_env.h
  133. LICENSE
  134. linux-aio.c
  135. m68k-dis.c
  136. m68k-semi.c
  137. m68k.ld
  138. MAINTAINERS
  139. Makefile
  140. Makefile.dis
  141. Makefile.hw
  142. Makefile.objs
  143. Makefile.target
  144. Makefile.user
  145. microblaze-dis.c
  146. migration-exec.c
  147. migration-fd.c
  148. migration-tcp.c
  149. migration-unix.c
  150. migration.c
  151. migration.h
  152. mips-dis.c
  153. mips.ld
  154. module.c
  155. module.h
  156. monitor.c
  157. monitor.h
  158. nbd.c
  159. nbd.h
  160. net-checksum.c
  161. net.c
  162. net.h
  163. notify.c
  164. notify.h
  165. osdep.c
  166. osdep.h
  167. path.c
  168. pci-ids.txt
  169. posix-aio-compat.c
  170. ppc-dis.c
  171. ppc.ld
  172. ppc64.ld
  173. qbool.c
  174. qbool.h
  175. qdict-test-data.txt
  176. qdict.c
  177. qdict.h
  178. qemu-aio.h
  179. qemu-barrier.h
  180. qemu-binfmt-conf.sh
  181. qemu-char.c
  182. qemu-char.h
  183. qemu-common.h
  184. qemu-config.c
  185. qemu-config.h
  186. qemu-doc.texi
  187. qemu-error.c
  188. qemu-error.h
  189. qemu-img-cmds.hx
  190. qemu-img.c
  191. qemu-img.texi
  192. qemu-io.c
  193. qemu-lock.h
  194. qemu-log.h
  195. qemu-malloc.c
  196. qemu-monitor.hx
  197. qemu-nbd.c
  198. qemu-nbd.texi
  199. qemu-objects.h
  200. qemu-option.c
  201. qemu-option.h
  202. qemu-options.hx
  203. qemu-queue.h
  204. qemu-sockets.c
  205. qemu-tech.texi
  206. qemu-thread.c
  207. qemu-thread.h
  208. qemu-timer.c
  209. qemu-timer.h
  210. qemu-tool.c
  211. qemu-x509.h
  212. qemu.sasl
  213. qemu_socket.h
  214. qerror.c
  215. qerror.h
  216. qfloat.c
  217. qfloat.h
  218. qint.c
  219. qint.h
  220. qjson.c
  221. qjson.h
  222. qlist.c
  223. qlist.h
  224. qobject.h
  225. qstring.c
  226. qstring.h
  227. readline.c
  228. readline.h
  229. README
  230. rules.mak
  231. rwhandler.c
  232. rwhandler.h
  233. s390-dis.c
  234. s390.ld
  235. savevm.c
  236. sdl.c
  237. sdl_keysym.h
  238. sdl_zoom.c
  239. sdl_zoom.h
  240. sdl_zoom_template.h
  241. sh4-dis.c
  242. softmmu-semi.h
  243. softmmu_defs.h
  244. softmmu_exec.h
  245. softmmu_header.h
  246. softmmu_template.h
  247. sparc-dis.c
  248. sparc.ld
  249. sparc64.ld
  250. sysemu.h
  251. targphys.h
  252. tcg-runtime.c
  253. texi2pod.pl
  254. thunk.c
  255. thunk.h
  256. TODO
  257. translate-all.c
  258. uboot_image.h
  259. usb-bsd.c
  260. usb-linux.c
  261. usb-stub.c
  262. VERSION
  263. vgafont.h
  264. vl.c
  265. vnc-auth-sasl.c
  266. vnc-auth-sasl.h
  267. vnc-auth-vencrypt.c
  268. vnc-auth-vencrypt.h
  269. vnc-tls.c
  270. vnc-tls.h
  271. vnc.c
  272. vnc.h
  273. vnc_keysym.h
  274. vnchextile.h
  275. x86_64.ld
  276. x_keymap.c
  277. x_keymap.h