powerpc: fix memory leaks in QE library
Fix two memory leaks in the Freescale QE library: add a missing kfree() in
ucc_fast_init() and ucc_slow_init() if the ioremap() fails, and update
ucc_fast_free() and ucc_slow_free() to call iounmap() if necessary.
Based on a patch from Tony Breeds <tony@bakeyournoodle.com>.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/qe_lib/ucc_fast.c b/arch/powerpc/sysdev/qe_lib/ucc_fast.c
index 1aecb07..25fbbfa 100644
--- a/arch/powerpc/sysdev/qe_lib/ucc_fast.c
+++ b/arch/powerpc/sysdev/qe_lib/ucc_fast.c
@@ -208,6 +208,7 @@
uccf->uf_regs = ioremap(uf_info->regs, sizeof(struct ucc_fast));
if (uccf->uf_regs == NULL) {
printk(KERN_ERR "%s: Cannot map UCC registers\n", __func__);
+ kfree(uccf);
return -ENOMEM;
}
@@ -355,6 +356,9 @@
if (uccf->ucc_fast_rx_virtual_fifo_base_offset)
qe_muram_free(uccf->ucc_fast_rx_virtual_fifo_base_offset);
+ if (uccf->uf_regs)
+ iounmap(uccf->uf_regs);
+
kfree(uccf);
}
EXPORT_SYMBOL(ucc_fast_free);