diff options
| author | David Nusinow <dnusinow@debian.org> | 2007-05-28 21:42:10 -0400 |
|---|---|---|
| committer | David Nusinow <dnusinow@debian.org> | 2007-05-28 21:42:10 -0400 |
| commit | 6bf8d5019313ee2251a44dfb7ad3435a3c6db7eb (patch) | |
| tree | 174d8a37eb379ac1d6a84a263865569e0278883a /hw | |
| parent | 6fdd134a0c3e6fdde9b089100e8783705c9cc6ac (diff) | |
Read ROM in chunks
This patch speeds up reads of the ROM by reading in large chunks rather
than one byte at a time. This patch was by Dann Frazier.
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/xfree86/os-support/bus/linuxPci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/xfree86/os-support/bus/linuxPci.c b/hw/xfree86/os-support/bus/linuxPci.c index 2aaa89cc2..3d8266e49 100644 --- a/hw/xfree86/os-support/bus/linuxPci.c +++ b/hw/xfree86/os-support/bus/linuxPci.c @@ -788,8 +788,10 @@ xf86ReadDomainMemory(PCITAG Tag, ADDRESS Base, int Len, unsigned char *Buf) write(fd, "1", 2); lseek(fd, 0, SEEK_SET); + len = min(Len, st.st_size); + /* copy the ROM until we hit Len, EOF or read error */ - for (i = 0; i < Len && read(fd, Buf, 1) > 0; Buf++, i++) + for (; len && (size = read(fd, Buf, len)) > 0 ; Buf+=size, len-=size) ; write(fd, "0", 2); |