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Hold on to firmware images until the interface detaches since

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firmware_get() will not work while resuming. Note that we can't
simply drop the FIRMWARE_UNLOAD flag, because that will result in
a firmware image that can never be unloaded by the user since the
firmware subsystem will hold a linker reference to it (it's not
clear that firmware_put() without FIRMWARE_UNLOAD ever does quite
what you'd want).
This commit is contained in:
Ian Dowse 2006-06-10 17:29:40 +00:00
parent eb1030c4fd
commit cbe2bd55ad
2 changed files with 17 additions and 5 deletions
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21
sys/dev/ipw/if_ipw.c
View File

@ -390,6 +390,11 @@ ipw_detach(device_t dev)
if (ifp != NULL)
if_free(ifp);
if (sc->sc_firmware != NULL) {
firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
sc->sc_firmware = NULL;
}
mtx_destroy(&sc->sc_mtx);
return 0;
@ -2002,16 +2007,22 @@ ipw_init(void *priv)
* Load firmware image using the firmware(9) subsystem. We need to
* release the driver's lock first.
*/
mtx_unlock(&sc->sc_mtx);
fp = firmware_get(imagename);
mtx_lock(&sc->sc_mtx);
if (sc->sc_firmware == NULL || strcmp(sc->sc_firmware->name,
imagename) != 0) {
mtx_unlock(&sc->sc_mtx);
if (sc->sc_firmware != NULL)
firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
sc->sc_firmware = firmware_get(imagename);
mtx_lock(&sc->sc_mtx);
}
if (fp == NULL) {
if (sc->sc_firmware == NULL) {
device_printf(sc->sc_dev,
"could not load firmware image '%s'\n", imagename);
goto fail1;
}
fp = sc->sc_firmware;
if (fp->datasize < sizeof *hdr) {
device_printf(sc->sc_dev,
"firmware image too short %zu\n", fp->datasize);
@ -2061,7 +2072,6 @@ ipw_init(void *priv)
goto fail2;
}
firmware_put(fp, FIRMWARE_UNLOAD);
sc->flags |= IPW_FLAG_FW_INITED;
/* retrieve information tables base addresses */
@ -2086,6 +2096,7 @@ ipw_init(void *priv)
return;
fail2: firmware_put(fp, FIRMWARE_UNLOAD);
sc->sc_firmware = NULL;
fail1: ifp->if_flags &= ~IFF_UP;
ipw_stop(sc);
sc->flags &=~ IPW_FLAG_INIT_LOCKED;

1
sys/dev/ipw/if_ipwvar.h
View File

@ -99,6 +99,7 @@ struct ipw_softc {
bus_space_tag_t sc_st;
bus_space_handle_t sc_sh;
void *sc_ih;
struct firmware *sc_firmware;
int sc_tx_timer;