Fixed bug in mmap test when run on subdevice with SDF_LSAMPL.

diff --git a/testing/mmap.c b/testing/mmap.c
index 08a956bffc78a3d2e76dc4332dfa4ce8e18b2143..15f9e6cee1c2251a601216a7dfb1568856679f82 100644 (file)
--- a/testing/mmap.c
+++ b/testing/mmap.c
@@ -22,8 +22,6 @@
 
 #define N_SAMPLES 10000
 
-#define BUFSZ N_SAMPLES*sizeof(sampl_t)
-
 #define MAPLEN 20480
 
 sigjmp_buf jump_env;
@@ -68,6 +66,7 @@ int test_mmap(void)
        unsigned char *map;
        unsigned int flags;
        int i;
+       unsigned sample_size;
 
        flags = comedi_get_subdevice_flags(device,subdevice);
 
@@ -75,13 +74,15 @@ int test_mmap(void)
                printf("not applicable\n");
                return 0;
        }
+       if(flags & SDF_LSAMPL) sample_size = sizeof(lsampl_t);
+       else sample_size = sizeof(sampl_t);
 
        if(comedi_get_cmd_generic_timed(device, subdevice, &cmd, 1, 1)<0){
                printf("E: comedi_get_cmd_generic_timed failed\n");
                return 0;
        }
 
-       buf=malloc(BUFSZ);
+       buf=malloc(sample_size * N_SAMPLES);
 
        map=mmap(NULL,MAPLEN,PROT_READ,MAP_SHARED,comedi_fileno(device),0);
        if(!map){
@@ -112,7 +113,7 @@ int test_mmap(void)
        go=1;
        b=buf;
        while(go){
-               ret = read(comedi_fileno(device),b,BUFSZ);
+               ret = read(comedi_fileno(device), b, N_SAMPLES * sample_size);
                if(ret<0){
                        if(errno==EAGAIN){
                                usleep(10000);