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| author | Brian King <brking@linux.vnet.ibm.com> | 2011-09-13 11:22:51 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-09-20 15:53:24 +1000 |
| commit | ac07a4a57f7408922a0b3d4dcb87104fe8a3d8ca (patch) | |
| tree | a3eede543ce5d626a34066c2690bff6c4568df8b /drivers/tty | |
| parent | 8bdafa39a47265bc029838b35cc6585f69224afa (diff) | |
| download | op-kernel-dev-ac07a4a57f7408922a0b3d4dcb87104fe8a3d8ca.zip op-kernel-dev-ac07a4a57f7408922a0b3d4dcb87104fe8a3d8ca.tar.gz | |
hvcs: Ensure page aligned partner info buffer
The Power platform requires the partner info buffer to be page aligned
otherwise it will fail the partner info hcall with H_PARAMETER. Switch
from using kmalloc to allocate this buffer to __get_free_page to ensure
page alignment.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/hvc/hvcs.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 4c8b6654..3929166 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -1532,7 +1532,7 @@ static int __devinit hvcs_initialize(void) goto register_fail; } - hvcs_pi_buff = kmalloc(PAGE_SIZE, GFP_KERNEL); + hvcs_pi_buff = (unsigned long *) __get_free_page(GFP_KERNEL); if (!hvcs_pi_buff) { rc = -ENOMEM; goto buff_alloc_fail; @@ -1548,7 +1548,7 @@ static int __devinit hvcs_initialize(void) return 0; kthread_fail: - kfree(hvcs_pi_buff); + free_page((unsigned long)hvcs_pi_buff); buff_alloc_fail: tty_unregister_driver(hvcs_tty_driver); register_fail: @@ -1597,7 +1597,7 @@ static void __exit hvcs_module_exit(void) kthread_stop(hvcs_task); spin_lock(&hvcs_pi_lock); - kfree(hvcs_pi_buff); + free_page((unsigned long)hvcs_pi_buff); hvcs_pi_buff = NULL; spin_unlock(&hvcs_pi_lock); |
