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Thu, 19 Nov 2020 10:37:53 +0000 (GMT) From: Marek Szyprowski To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Georgi Djakov , Saravana Kannan Cc: Marek Szyprowski , Bartlomiej Zolnierkiewicz , Sylwester Nawrocki Subject: [PATCH] interconnect: fix memory trashing in of_count_icc_providers() Date: Thu, 19 Nov 2020 11:37:46 +0100 Message-Id: <20201119103746.32564-1-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrOIsWRmVeSWpSXmKPExsWy7djPc7pM3tviDTra2S02zljPajF97yY2 i02Pr7FaXN41h83ic+8RRou1R+6yWxx+085q0XXoL5sDh8eCTaUed67tYfPYvKTeo2/LKkaP z5vkAlijuGxSUnMyy1KL9O0SuDI23prMXHCKvWLD0i2MDYzb2LoYOTkkBEwkZiz/wdrFyMUh JLCCUWLv8mfsEM4XRomdr28yQzifGSX+377LCNNy+vA3JojEckaJj927mOBapq75xAxSxSZg KNH1tgtsiYjANkaJ90eSQYqYBaYAdfydxwqSEBYIkPjy6DHYWBYBVYlFE6aD2bwCthKnN1xn hlgnL7F6wwGwOyQEWjkkdu+Yyw6RcJG49+sKC4QtLPHq+BaouIzE6ck9LBANzYwSD8+tZYdw ehglLjfNgPrCWuLOuV9A93EA3aQpsX6XPkTYUeLk66usIGEJAT6JG28FQcLMQOakbdOZIcK8 Eh1tQhDVahKzjq+DW3vwwiWomz0klr3dyQRiCwnEShzdv51xAqPcLIRdCxgZVzGKp5YW56an FhvlpZbrFSfmFpfmpesl5+duYgSmhdP/jn/Zwbj81Ue9Q4xMHIyHGCU4mJVEeNdqbo0X4k1J rKxKLcqPLyrNSS0+xCjNwaIkzpu0ZU28kEB6YklqdmpqQWoRTJaJg1OqgSnZQmni04y7B35U n1n/W/ry2jU39l2baLs/KccofknCh6fH3TstMyYIftymXR1SMo05h/9zwIVv62WY9mWHF65I EWYUZkpJaK97VPxBdHKDqUaw3NwOpY1vJhjNv7FfeOvqqUp+OnJtYb2n/t2cdzJnnZPew0cX wie1/pCcOLdo26VnfF5Kx32/nv2iX81uvPbUnt8/82o8uaM/p87a7bDk2Ufuq/LaHx9ublPT SUnNz1I7Hdwha/EzfH3ZzdxY90JXU8e5SxvDF/oc3rF5Zvn8IMcl5qkzNA/HhRay1R9eHH47 1lrI7HVBR+OPxoDAHP5vJ8JVDR+vmfLi3fLKGcd39hYvPOO6P2LjhL4/BqJKLMUZiYZazEXF iQCKrvhvegMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrLLMWRmVeSWpSXmKPExsVy+t/xu7qM3tviDQ7u1LfYOGM9q8X0vZvY LDY9vsZqcXnXHDaLz71HGC3WHrnLbnH4TTurRdehv2wOHB4LNpV63Lm2h81j85J6j74tqxg9 Pm+SC2CN0rMpyi8tSVXIyC8usVWKNrQw0jO0tNAzMrHUMzQ2j7UyMlXSt7NJSc3JLEst0rdL 0MvYeGsyc8Ep9ooNS7cwNjBuY+ti5OSQEDCROH34G1MXIxeHkMBSRonHy3exQiRkJE5Oa4Cy hSX+XOtigyj6xChx+V07WDebgKFE11uIhIjALkaJPQ2TmUEcZoFpjBKnni4GqxIW8JN4tv4O O4jNIqAqsWjCdEYQm1fAVuL0huvMECvkJVZvOMA8gZFnASPDKkaR1NLi3PTcYkO94sTc4tK8 dL3k/NxNjMBw3Hbs5+YdjPNefdQ7xMjEwXiIUYKDWUmEd63m1ngh3pTEyqrUovz4otKc1OJD jKZA+yYyS4km5wMjIq8k3tDMwNTQxMzSwNTSzFhJnHfr3DXxQgLpiSWp2ampBalFMH1MHJxS DUwuHRZqfYKvZ8Tfc3wZ5XFqj9mNl9kX2nev//mk/4vKy/9Te4y0+7glz7EtYZ4Vf3VrndLv CM3yTVt+rP/0fIvfy56X584K19cxH93Ix7++QyuvtVxt1aKLm5V3mPtUGv3s6nM7sfPRTeWT r622ejS+XvC5NUWgarZXUPy5c6eP9h1Rfdb9ZP4Z1iiLuOWt29cYf2a2vnMsd5Ps9oJd7Grn RQ1qnk5Y4prHz6QbzFy1XlI3PDz80N3ip9P3FB661CbSZDv9+6Pr+x4FcO3VLFVxFNJbuyW8 vFlXsfZdeGboRL3DS5bIPJhoyOKym3OveUvYskj2ec5LmBu9753+Wu5+/t6145nf7nFv8Pz3 d7e2EktxRqKhFnNRcSIAzXFpdNACAAA= X-CMS-MailID: 20201119103753eucas1p11810b99e19d0a8477b4ca84482ab4d16 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20201119103753eucas1p11810b99e19d0a8477b4ca84482ab4d16 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201119103753eucas1p11810b99e19d0a8477b4ca84482ab4d16 References: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org of_count_icc_providers() function uses for_each_available_child_of_node() helper to recursively check all the available nodes. This helper already properly handles child nodes' reference count, so there is no need to do it explicitely. Remove the excessive call to of_node_put(). This fixes memory trashing when CONFIG_OF_DYNAMIC is enabled (for example arm/multi_v7_defconfig). Fixes: b1d681d8d324 ("interconnect: Add sync state support") Signed-off-by: Marek Szyprowski --- drivers/interconnect/core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 974a66725d09..5ad519c9f239 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -1083,7 +1083,6 @@ static int of_count_icc_providers(struct device_node *np) count++; count += of_count_icc_providers(child); } - of_node_put(np); return count; } -- 2.17.1