From 61a4e9e91dd3916ef91aa4899b7271bba0248677 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Wed, 20 Aug 2008 10:29:09 -0500 Subject: [PATCH] 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 . Signed-off-by: Timur Tabi Signed-off-by: Kumar Gala --- arch/powerpc/sysdev/qe_lib/ucc_fast.c | 4 ++++ arch/powerpc/sysdev/qe_lib/ucc_slow.c | 8 +++++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/sysdev/qe_lib/ucc_fast.c b/arch/powerpc/sysdev/qe_lib/ucc_fast.c index 1aecb075a72e..25fbbfaa837d 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc_fast.c +++ b/arch/powerpc/sysdev/qe_lib/ucc_fast.c @@ -208,6 +208,7 @@ int ucc_fast_init(struct ucc_fast_info * uf_info, struct ucc_fast_private ** ucc 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 @@ void ucc_fast_free(struct ucc_fast_private * uccf) 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); diff --git a/arch/powerpc/sysdev/qe_lib/ucc_slow.c b/arch/powerpc/sysdev/qe_lib/ucc_slow.c index a578bc77b9d5..e1d6a1340157 100644 --- a/arch/powerpc/sysdev/qe_lib/ucc_slow.c +++ b/arch/powerpc/sysdev/qe_lib/ucc_slow.c @@ -171,6 +171,7 @@ int ucc_slow_init(struct ucc_slow_info * us_info, struct ucc_slow_private ** ucc uccs->us_regs = ioremap(us_info->regs, sizeof(struct ucc_slow)); if (uccs->us_regs == NULL) { printk(KERN_ERR "%s: Cannot map UCC registers\n", __func__); + kfree(uccs); return -ENOMEM; } @@ -367,10 +368,11 @@ void ucc_slow_free(struct ucc_slow_private * uccs) if (uccs->tx_base_offset) qe_muram_free(uccs->tx_base_offset); - if (uccs->us_pram) { + if (uccs->us_pram) qe_muram_free(uccs->us_pram_offset); - uccs->us_pram = NULL; - } + + if (uccs->us_regs) + iounmap(uccs->us_regs); kfree(uccs); } -- 2.20.1