Messages in this thread Patch in this message | | | Date | Wed, 12 Nov 2014 21:30:43 +0100 | From | SF Markus Elfring <> | Subject | [PATCH v2 2/2] staging: rtl8188eu: Better memory clean-up in efuse_phymap_to_logical() |
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From: Markus Elfring <elfring@users.sourceforge.net> Date: Wed, 12 Nov 2014 20:40:12 +0100
Memory releases were handled in an inefficient way by the implementation of the efuse_phymap_to_logical() function in case of an allocation failure. The corresponding clean-up was improved by reordering of kfree() calls and a few adjustments for jump labels.
Reported-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> --- drivers/staging/rtl8188eu/core/rtw_efuse.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/rtl8188eu/core/rtw_efuse.c b/drivers/staging/rtl8188eu/core/rtw_efuse.c index 697876b..359f169 100644 --- a/drivers/staging/rtl8188eu/core/rtw_efuse.c +++ b/drivers/staging/rtl8188eu/core/rtw_efuse.c @@ -112,7 +112,7 @@ efuse_phymap_to_logical(u8 *phymap, u16 _offset, u16 _size_byte, u8 *pbuf) eFuseWord = (u16 **)rtw_malloc2d(EFUSE_MAX_SECTION_88E, EFUSE_MAX_WORD_UNIT, sizeof(u16)); if (eFuseWord == NULL) { DBG_88E("%s: alloc eFuseWord fail!\n", __func__); - goto exit; + goto cleanup1; } /* 0. Refresh efuse init map as all oxFF. */ @@ -130,7 +130,7 @@ efuse_phymap_to_logical(u8 *phymap, u16 _offset, u16 _size_byte, u8 *pbuf) eFuse_Addr++; } else { DBG_88E("EFUSE is empty efuse_Addr-%d efuse_data =%x\n", eFuse_Addr, rtemp8); - goto exit; + goto cleanup2; } /* */ @@ -209,10 +209,14 @@ efuse_phymap_to_logical(u8 *phymap, u16 _offset, u16 _size_byte, u8 *pbuf) /* 5. Calculate Efuse utilization. */ /* */ -exit: +cleanup2: + kfree(eFuseWord); + +cleanup1: kfree(efuseTbl); - kfree(eFuseWord); +exit: + ; } static void efuse_read_phymap_from_txpktbuf( -- 2.1.3
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