pci: resolve Coverity warnings

Or rather, slightly improve the code based on a false positive.

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 93551f31e334a3757ece22901f12cfebcdac9116..38fc4233808315751ce8db6dce5f897809e541b7 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -121,7 +121,7 @@ static char *pci_vid_name(u16_t vid);
 static char *pci_baseclass_name(u8_t baseclass);
 static char *pci_subclass_name(u8_t baseclass, u8_t subclass, u8_t
        infclass);
-static void ntostr(unsigned n, char **str, char *end);
+static void ntostr(unsigned n, char **str, const char *end);
 
 static u8_t pci_attr_r8_u(int devind, int port);
 static u32_t pci_attr_r32_u(int devind, int port);
@@ -2278,7 +2278,7 @@ static char *pci_subclass_name(u8_t baseclass, u8_t subclass, u8_t infclass)
 static void ntostr(n, str, end)
 unsigned n;
 char **str;
-char *end;
+const char *end;
 {
        char tmpstr[20];
        int i;
@@ -2306,7 +2306,7 @@ char *end;
                (*str)++;
        }
        if (*str == end)        
-               end[-1]= '\0';
+               (*str)[-1]= '\0';
        else
                **str= '\0';
 }