Improved logic flow and code readability based on suggestions

drivers/virtio/device_table.inc

@@ -13,40 +13,37 @@ VEN_STRIDE       = 8
 ; clears and returns value in esi
 if used PCI_find_dev
 proc PCI_find_dev stdcall ven_id, dev_id
+
+    push    edx
     xor    esi, esi
 
     mov     esi, ven1_array
     cmp     [ven_id], VirtVendorID1
-    jz      .pre_loop
+    jz      .next_device_id
 
     mov     esi, ven2_array
     cmp     [ven_id], VirtVendorID2
-    jnz     @F              ;unknown vendor id
+    jnz     .not_found              ;unknown vendor id
 
-.pre_loop:
-    push    edx
-
-.loop:
+.next_device_id:
     mov     edx, [esi]      ;fewer memory accesses
     
     test    edx, edx
     jz      .not_found      ;end of array
 
-    cmp     edx, [dev_id]
-    jz     .found
-
     add     esi, VEN_STRIDE
-    jmp     .loop
 
-.found:
+    cmp     edx, [dev_id]
+    jnz     .next_device_id
 
+;Found device
+    sub     esi, VEN_STRIDE     ;The loop adds it an one time extra
     pop     edx
     ret
 
 .not_found:
 
     pop     edx
-@@:
     xor     esi, esi
     ret
 endp

drivers/virtio/virt_io_det.asm

@@ -13,12 +13,6 @@ DEBUG        equ 1
 __DEBUG__    equ 1
 __DEBUG_LEVEL__ equ 1
 
-API_VERSION     equ 0  ;debug
-
-STRIDE       equ 4      ;size of row in devices table
-
-SRV_GETVERSION  equ 0
-
 section '.flat' code readable writable executable
 include '../proc32.inc'
 include '../struct.inc'
@@ -61,10 +55,9 @@ proc detect
         mov     ecx, edx
         shr     ecx, 16         ;cx upper half - device id, dx lower half - vendor id
 
-;prepare regs for find dev proc
-        movzx   ecx, cx    
+;prepare regs for find dev proc   
         movzx   edx, dx     
-
+        
         stdcall PCI_find_dev, edx, ecx
         test    esi, esi
         jz     .notVirt
@@ -76,9 +69,9 @@ proc detect
         jmp     .next_dev
 
 .finish:
-        xor eax, eax
-        pop ebx
-        inc eax
+        xor     eax, eax
+        pop     ebx
+        inc     eax
         ret
 endp