pw_transfer: Fix start logic

Don't set a transfer context's handler (activating the transfer) if its
Prepare function fails.

Change-Id: Id91a042a54aef14f12a153b00fba30060de02a13
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/55509
Reviewed-by: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Commit-Queue: Alexei Frolov <frolv@google.com>
2 files changed
tree: 6248c3ce20bf69065ee64b94aaabad746645f143
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_arduino_build/
  7. pw_assert/
  8. pw_assert_basic/
  9. pw_assert_log/
  10. pw_base64/
  11. pw_bloat/
  12. pw_blob_store/
  13. pw_boot/
  14. pw_boot_cortex_m/
  15. pw_build/
  16. pw_bytes/
  17. pw_checksum/
  18. pw_chrono/
  19. pw_chrono_embos/
  20. pw_chrono_freertos/
  21. pw_chrono_stl/
  22. pw_chrono_threadx/
  23. pw_cli/
  24. pw_console/
  25. pw_containers/
  26. pw_cpu_exception/
  27. pw_cpu_exception_cortex_m/
  28. pw_crypto/
  29. pw_docgen/
  30. pw_doctor/
  31. pw_env_setup/
  32. pw_function/
  33. pw_fuzzer/
  34. pw_hdlc/
  35. pw_hex_dump/
  36. pw_i2c/
  37. pw_interrupt/
  38. pw_interrupt_cortex_m/
  39. pw_kvs/
  40. pw_libc/
  41. pw_log/
  42. pw_log_basic/
  43. pw_log_null/
  44. pw_log_rpc/
  45. pw_log_tokenized/
  46. pw_malloc/
  47. pw_malloc_freelist/
  48. pw_metric/
  49. pw_minimal_cpp_stdlib/
  50. pw_module/
  51. pw_multisink/
  52. pw_package/
  53. pw_persistent_ram/
  54. pw_polyfill/
  55. pw_preprocessor/
  56. pw_presubmit/
  57. pw_protobuf/
  58. pw_protobuf_compiler/
  59. pw_random/
  60. pw_result/
  61. pw_ring_buffer/
  62. pw_router/
  63. pw_rpc/
  64. pw_snapshot/
  65. pw_span/
  66. pw_status/
  67. pw_stm32cube_build/
  68. pw_stream/
  69. pw_string/
  70. pw_symbolizer/
  71. pw_sync/
  72. pw_sync_baremetal/
  73. pw_sync_embos/
  74. pw_sync_freertos/
  75. pw_sync_stl/
  76. pw_sync_threadx/
  77. pw_sys_io/
  78. pw_sys_io_arduino/
  79. pw_sys_io_baremetal_lm3s6965evb/
  80. pw_sys_io_baremetal_stm32f429/
  81. pw_sys_io_stdio/
  82. pw_target_runner/
  83. pw_thread/
  84. pw_thread_embos/
  85. pw_thread_freertos/
  86. pw_thread_stl/
  87. pw_thread_threadx/
  88. pw_tls_client/
  89. pw_tls_client_boringssl/
  90. pw_tls_client_mbedtls/
  91. pw_tokenizer/
  92. pw_tool/
  93. pw_toolchain/
  94. pw_trace/
  95. pw_trace_tokenized/
  96. pw_transfer/
  97. pw_unit_test/
  98. pw_varint/
  99. pw_watch/
  100. pw_web_ui/
  101. targets/
  102. third_party/
  103. .bazelignore
  104. .bazelrc
  105. .clang-format
  106. .eslintrc.json
  107. .gitattributes
  108. .gitignore
  109. .gn
  110. .prettierrc.js
  111. .pylintrc
  112. activate.bat
  113. AUTHORS
  114. bootstrap.bat
  115. bootstrap.sh
  116. BUILD.bazel
  117. BUILD.gn
  118. BUILDCONFIG.gn
  119. CMakeLists.txt
  120. LICENSE
  121. modules.gni
  122. OWNERS
  123. package.json
  124. PW_PLUGINS
  125. README.md
  126. tsconfig.json
  127. WORKSPACE
  128. yarn.lock
README.md

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