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fix drmGetMinorNameForFD(). tweaks and ok jsg@.

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For the gpu n, the main device node is /dev/dri/card<n> and the
render device node is /dev/dri/renderD<n+drmGetMinorBase()> not
/dev/dri/renderD<n>
and miod@ checked that no port should be affected.
This commit is contained in:
matthieu
2023-07-06 07:21:30 +00:00
parent 93198764fc
commit 508791166c
1 changed files with 6 additions and 2 deletions
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8
lib/libdrm/xf86drm.c
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@@ -846,7 +846,7 @@ static int
_priv_open_device(const char *path) _priv_open_device(const char *path)
{ {
drmMsg("_priv_open_device\n"); drmMsg("_priv_open_device\n");
return open(path, O_RDWR, 0); return open(path, O_RDWR);
} }
drm_public int priv_open_device(const char *) drm_public int priv_open_device(const char *)
@@ -3539,6 +3539,10 @@ static char *drmGetMinorNameForFD(int fd, int type)
const char *dev_name = drmGetDeviceName(type); const char *dev_name = drmGetDeviceName(type);
unsigned int maj, min; unsigned int maj, min;
int n; int n;
int base = drmGetMinorBase(type);
if (base < 0)
return NULL;
if (fstat(fd, &sbuf)) if (fstat(fd, &sbuf))
return NULL; return NULL;
@@ -3552,7 +3556,7 @@ static char *drmGetMinorNameForFD(int fd, int type)
if (!dev_name) if (!dev_name)
return NULL; return NULL;
n = snprintf(buf, sizeof(buf), dev_name, DRM_DIR_NAME, min); n = snprintf(buf, sizeof(buf), dev_name, DRM_DIR_NAME, base + min);
if (n == -1 || n >= sizeof(buf)) if (n == -1 || n >= sizeof(buf))
return NULL; return NULL;