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authorJack Steiner <steiner@sgi.com>2009-04-02 16:59:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:05:07 -0700
commit27ca8a7b2bdfb3e22e67fbd5df58e6b6f0bbcd48 (patch)
treec7fbe657ba4d31b1977b7247dd7626414246a1c3 /drivers/misc/sgi-gru
parente1c3219d06447dab8a87b96df1211d158e21071e (diff)
sgi-gru: fix bugs related to module unload of the GRU driver
Fix bugs related to module unload of the GRU driver. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru')
-rw-r--r--drivers/misc/sgi-gru/grufile.c5
-rw-r--r--drivers/misc/sgi-gru/grukservices.c19
-rw-r--r--drivers/misc/sgi-gru/grutables.h1
3 files changed, 24 insertions, 1 deletions
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index b7a21ce9149..3e6e42d2f01 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -440,7 +440,7 @@ exit1:
static void __exit gru_exit(void)
{
- int i, bid;
+ int i, bid, gid;
int order = get_order(sizeof(struct gru_state) *
GRU_CHIPLETS_PER_BLADE);
@@ -450,6 +450,9 @@ static void __exit gru_exit(void)
for (i = 0; i < GRU_CHIPLETS_PER_BLADE; i++)
free_irq(IRQ_GRU + i, NULL);
+ foreach_gid(gid)
+ gru_kservices_exit(GID_TO_GRU(gid));
+
for (bid = 0; bid < GRU_MAX_BLADES; bid++)
free_pages((unsigned long)gru_base[bid], order);
diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c
index a3712843115..6b1efe44727 100644
--- a/drivers/misc/sgi-gru/grukservices.c
+++ b/drivers/misc/sgi-gru/grukservices.c
@@ -690,3 +690,22 @@ int gru_kservices_init(struct gru_state *gru)
quicktest(gru);
return 0;
}
+
+void gru_kservices_exit(struct gru_state *gru)
+{
+ struct gru_context_configuration_handle *cch;
+ struct gru_blade_state *bs;
+
+ bs = gru->gs_blade;
+ if (gru != &bs->bs_grus[1])
+ return;
+
+ cch = get_cch(gru->gs_gru_base_vaddr, KERNEL_CTXNUM);
+ lock_cch_handle(cch);
+ if (cch_interrupt_sync(cch))
+ BUG();
+ if (cch_deallocate(cch))
+ BUG();
+ unlock_cch_handle(cch);
+}
+
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index c6e0e3de07f..8e5c8e5bb53 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -600,6 +600,7 @@ extern void gru_unload_context(struct gru_thread_state *gts, int savestate);
extern void gts_drop(struct gru_thread_state *gts);
extern void gru_tgh_flush_init(struct gru_state *gru);
extern int gru_kservices_init(struct gru_state *gru);
+extern void gru_kservices_exit(struct gru_state *gru);
extern irqreturn_t gru_intr(int irq, void *dev_id);
extern int gru_handle_user_call_os(unsigned long address);
extern int gru_user_flush_tlb(unsigned long arg);