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| 2 | |
| 3 | * Driver for USB Mass Storage compliant devices
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| 4 | * Debugging Functions Source Code File
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| 5 | *
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| 6 | * Current development and maintenance by:
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| 7 | * (c) 1999-2002 Matthew Dharm ([email protected])
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| 8 | *
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| 9 | * Developed with the assistance of:
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| 10 | * (c) 2002 Alan Stern <[email protected]>
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| 11 | *
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| 12 | * Initial work by:
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| 13 | * (c) 1999 Michael Gee ([email protected])
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| 14 | *
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| 15 | * This driver is based on the 'USB Mass Storage Class' document. This
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| 16 | * describes in detail the protocol used to communicate with such
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| 17 | * devices. Clearly, the designers had SCSI and ATAPI commands in
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| 18 | * mind when they created this document. The commands are all very
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| 19 | * similar to commands in the SCSI-II and ATAPI specifications.
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| 20 | *
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| 21 | * It is important to note that in a number of cases this class
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| 22 | * exhibits class-specific exemptions from the USB specification.
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| 23 | * Notably the usage of NAK, STALL and ACK differs from the norm, in
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| 24 | * that they are used to communicate wait, failed and OK on commands.
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| 25 | *
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| 26 | * Also, for certain devices, the interrupt endpoint is used to convey
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| 27 | * status of a command.
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| 28 |
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| 29 |
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| 30 | #include <linux/device.h>
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| 31 | #include <linux/cdrom.h>
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| 32 | #include <linux/export.h>
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| 33 | #include <scsi/scsi.h>
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| 34 | #include <scsi/scsi_cmnd.h>
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| 35 | #include <scsi/scsi_dbg.h>
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| 36 |
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| 37 | #include "usb.h"
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| 38 | #include "debug.h"
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| 39 |
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| 40 |
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| 41 | void usb_stor_show_command(const struct us_data *us, struct scsi_cmnd *srb)
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| 42 | {
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| 43 | char *what = NULL;
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| 44 |
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| 45 | switch (srb->cmnd[0]) {
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| 46 | case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
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| 47 | case REZERO_UNIT: what = "REZERO_UNIT"; break;
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| 48 | case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
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| 49 | case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
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| 50 | case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
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| 51 | case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
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| 52 | case READ_6: what = "READ_6"; break;
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| 53 | case WRITE_6: what = "WRITE_6"; break;
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| 54 | case SEEK_6: what = "SEEK_6"; break;
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| 55 | case READ_REVERSE: what = "READ_REVERSE"; break;
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| 56 | case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
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| 57 | case SPACE: what = "SPACE"; break;
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| 58 | case INQUIRY: what = "INQUIRY"; break;
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| 59 | case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
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| 60 | case MODE_SELECT: what = "MODE_SELECT"; break;
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| 61 | case RESERVE_6: what = "RESERVE"; break;
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| 62 | case RELEASE_6: what = "RELEASE"; break;
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| 63 | case COPY: what = "COPY"; break;
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| 64 | case ERASE: what = "ERASE"; break;
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| 65 | case MODE_SENSE: what = "MODE_SENSE"; break;
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| 66 | case START_STOP: what = "START_STOP"; break;
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| 67 | case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
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| 68 | case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
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| 69 | case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
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| 70 | case SET_WINDOW: what = "SET_WINDOW"; break;
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| 71 | case READ_CAPACITY: what = "READ_CAPACITY"; break;
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| 72 | case READ_10: what = "READ_10"; break;
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| 73 | case WRITE_10: what = "WRITE_10"; break;
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| 74 | case SEEK_10: what = "SEEK_10"; break;
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| 75 | case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
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| 76 | case VERIFY: what = "VERIFY"; break;
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| 77 | case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
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| 78 | case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
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| 79 | case SEARCH_LOW: what = "SEARCH_LOW"; break;
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| 80 | case SET_LIMITS: what = "SET_LIMITS"; break;
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| 81 | case READ_POSITION: what = "READ_POSITION"; break;
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| 82 | case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
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| 83 | case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
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| 84 | case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
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| 85 | case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
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| 86 | case COMPARE: what = "COMPARE"; break;
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| 87 | case COPY_VERIFY: what = "COPY_VERIFY"; break;
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| 88 | case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
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| 89 | case READ_BUFFER: what = "READ_BUFFER"; break;
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| 90 | case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
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| 91 | case READ_LONG: what = "READ_LONG"; break;
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| 92 | case WRITE_LONG: what = "WRITE_LONG"; break;
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| 93 | case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
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| 94 | case WRITE_SAME: what = "WRITE_SAME"; break;
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| 95 | case GPCMD_READ_SUBCHANNEL: what = "READ SUBCHANNEL"; break;
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| 96 | case READ_TOC: what = "READ_TOC"; break;
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| 97 | case GPCMD_READ_HEADER: what = "READ HEADER"; break;
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| 98 | case GPCMD_PLAY_AUDIO_10: what = "PLAY AUDIO (10)"; break;
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| 99 | case GPCMD_PLAY_AUDIO_MSF: what = "PLAY AUDIO MSF"; break;
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| 100 | case GPCMD_GET_EVENT_STATUS_NOTIFICATION:
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| 101 | what = "GET EVENT/STATUS NOTIFICATION"; break;
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| 102 | case GPCMD_PAUSE_RESUME: what = "PAUSE/RESUME"; break;
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| 103 | case LOG_SELECT: what = "LOG_SELECT"; break;
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| 104 | case LOG_SENSE: what = "LOG_SENSE"; break;
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| 105 | case GPCMD_STOP_PLAY_SCAN: what = "STOP PLAY/SCAN"; break;
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| 106 | case GPCMD_READ_DISC_INFO: what = "READ DISC INFORMATION"; break;
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| 107 | case GPCMD_READ_TRACK_RZONE_INFO:
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| 108 | what = "READ TRACK INFORMATION"; break;
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| 109 | case GPCMD_RESERVE_RZONE_TRACK: what = "RESERVE TRACK"; break;
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| 110 | case GPCMD_SEND_OPC: what = "SEND OPC"; break;
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| 111 | case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
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| 112 | case GPCMD_REPAIR_RZONE_TRACK: what = "REPAIR TRACK"; break;
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| 113 | case 0x59: what = "READ MASTER CUE"; break;
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| 114 | case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
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| 115 | case GPCMD_CLOSE_TRACK: what = "CLOSE TRACK/SESSION"; break;
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| 116 | case 0x5C: what = "READ BUFFER CAPACITY"; break;
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| 117 | case 0x5D: what = "SEND CUE SHEET"; break;
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| 118 | case GPCMD_BLANK: what = "BLANK"; break;
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| 119 | case REPORT_LUNS: what = "REPORT LUNS"; break;
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| 120 | case MOVE_MEDIUM: what = "MOVE_MEDIUM or PLAY AUDIO (12)"; break;
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| 121 | case READ_12: what = "READ_12"; break;
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| 122 | case WRITE_12: what = "WRITE_12"; break;
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| 123 | case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
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| 124 | case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
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| 125 | case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
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| 126 | case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
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| 127 | case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
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| 128 | case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
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| 129 | case GPCMD_READ_CD_MSF: what = "READ CD MSF"; break;
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| 130 | case GPCMD_SCAN: what = "SCAN"; break;
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| 131 | case GPCMD_SET_SPEED: what = "SET CD SPEED"; break;
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| 132 | case GPCMD_MECHANISM_STATUS: what = "MECHANISM STATUS"; break;
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| 133 | case GPCMD_READ_CD: what = "READ CD"; break;
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| 134 | case 0xE1: what = "WRITE CONTINUE"; break;
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| 135 | case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
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| 136 | default: what = "(unknown command)"; break;
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| 137 | }
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| 138 | usb_stor_dbg(us, "Command %s (%d bytes)\n", what, srb->cmd_len);
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| 139 | usb_stor_dbg(us, "bytes: %*ph\n", min_t(int, srb->cmd_len, 16),
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| 140 | (const unsigned char *)srb->cmnd);
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| 141 | }
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| 142 |
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| 143 | void usb_stor_show_sense(const struct us_data *us,
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| 144 | unsigned char key,
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| 145 | unsigned char asc,
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| 146 | unsigned char ascq)
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| 147 | {
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| 148 | const char *what, *keystr, *fmt;
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| 149 |
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| 150 | keystr = scsi_sense_key_string(key);
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| 151 | what = scsi_extd_sense_format(asc, ascq, &fmt);
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| 152 |
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| 153 | if (keystr == NULL)
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| 154 | keystr = "(Unknown Key)";
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| 155 | if (what == NULL)
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| 156 | what = "(unknown ASC/ASCQ)";
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| 157 |
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| 158 | if (fmt)
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| 159 | usb_stor_dbg(us, "%s: %s (%s%x)\n", keystr, what, fmt, ascq);
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| 160 | else
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| 161 | usb_stor_dbg(us, "%s: %s\n", keystr, what);
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| 162 | }
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| 163 |
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| 164 | void usb_stor_dbg(const struct us_data *us, const char *fmt, ...)
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| 165 | {
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| 166 | va_list args;
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| 167 |
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| 168 | va_start(args, fmt);
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| 169 |
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| 170 | dev_vprintk_emit(LOGLEVEL_DEBUG, &us->pusb_dev->dev, fmt, args);
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| 171 |
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| 172 | va_end(args);
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| 173 | }
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| 174 | EXPORT_SYMBOL_GPL(usb_stor_dbg);
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