好不容易 寫出driver 好不容易 讓arm板可以insmod 然後開開心心的寫了個 test.c 要和driver 溝通看看!! but..... 執行./test 後 9f80: 00000005 c0030088 c3b39fa4 c3b39f98 c009927c c0099174 00000000 c3b39fa8 9fa0: c002fee0 c0099268 00000000 00000000 000087e8 00000000 4014b000 00008590 9fc0: 00000000 00000000 00000000 00000005 00000000 00000000 40024000 beef9d54 9fe0: 00000000 beef9d40 000085b8 400daa6c 60000010 000087e8 00000000 00000000 Backtrace: [<c009dc24>] (chrdev_open+0x0/0x160) from [<c0099374>] (__dentry_open+0xd4/0x26c ) r7:c3a7a280 r6:c34e3a80 r5:c34e4550 r4:c3928f00 [<c00992a0>] (__dentry_open+0x0/0x26c) from [<c0099604>] (nameidata_to_filp+0x60 /0x68) [<c00995a4>] (nameidata_to_filp+0x0/0x68) from [<c00a6860>] (do_filp_open+0x54c/ 0x878) r5:00000024 r4:00000001 [<c00a6314>] (do_filp_open+0x0/0x878) from [<c00991c8>] (do_sys_open+0x64/0xe0) [<c0099164>] (do_sys_open+0x0/0xe0) from [<c009927c>] (sys_open+0x24/0x28) r8:c0030088 r7:00000005 r6:00000000 r5:00000000 r4:00000000 [<c0099258>] (sys_open+0x0/0x28) from [<c002fee0>] (ret_fast_syscall+0x0/0x28) Code: e58470e8 e1a03007 e5b3102c e28420e0 (e5812004) ---[ end trace 662a98e0c0a167c1 ]--- Segmentation fault [root@FriendlyARM /]# 出現以上一堆看不懂的東西 然後 顯示Segmentation fault .... 我有設定mknod /dev/ 下也找的到設定好的檔案 可是這個dev 檔 不管是 cat 還是用 open函數 呼叫 都會有類似錯誤.... 請問我大概問題出在哪裡.....殘念 Orz 補充發現的新問題 rmmod 該 driver 系統會跟我說 沒有這個東西 可是lsmod 明明就有.... 這兩個問題 的原因 是不是相同啊... -- _\^^^^^^^^/ ◣\◣◣◣◢)◢ \ \\\ // / 萬事屋的.. ★\/ \◣ /∠◢ ★ \ /★ ◢\◤◤◤◤\◣ ⊙ ⊙ ☆ ◥┬ ┬" ▼ ○ o ◤ /|≡≡|\ /\▼/◣ by freijaking --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.115.236.24 ※ 編輯: FUFrench 來自: 140.115.236.24 (06/21 11:20)