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{
    "id": 806137,
    "url": "http://patchwork.ozlabs.org/api/patches/806137/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/rtc-linux/patch/3b43da73-ff4e-4519-d1c7-266b17cc5d05@gmail.com/",
    "project": {
        "id": 9,
        "url": "http://patchwork.ozlabs.org/api/projects/9/?format=api",
        "name": "Linux RTC development",
        "link_name": "rtc-linux",
        "list_id": "linux-rtc.vger.kernel.org",
        "list_email": "linux-rtc@vger.kernel.org",
        "web_url": "",
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        "webscm_url": "",
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    "msgid": "<3b43da73-ff4e-4519-d1c7-266b17cc5d05@gmail.com>",
    "list_archive_url": null,
    "date": "2017-08-26T19:16:34",
    "name": "rtc: core: let rtc_set_time properly populate element wday",
    "commit_ref": null,
    "pull_url": null,
    "state": "rejected",
    "archived": false,
    "hash": "2ce15c75f0212da6a316d5d30ad667fedb2ec4ec",
    "submitter": {
        "id": 65365,
        "url": "http://patchwork.ozlabs.org/api/people/65365/?format=api",
        "name": "Heiner Kallweit",
        "email": "hkallweit1@gmail.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/rtc-linux/patch/3b43da73-ff4e-4519-d1c7-266b17cc5d05@gmail.com/mbox/",
    "series": [],
    "comments": "http://patchwork.ozlabs.org/api/patches/806137/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/806137/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<linux-rtc-owner@vger.kernel.org>",
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        "X-Received": "by 10.223.134.107 with SMTP id 40mr1316914wrw.223.1503775003910; \n\tSat, 26 Aug 2017 12:16:43 -0700 (PDT)",
        "From": "Heiner Kallweit <hkallweit1@gmail.com>",
        "Subject": "[PATCH] rtc: core: let rtc_set_time properly populate element wday",
        "To": "Alexandre Belloni <alexandre.belloni@free-electrons.com>",
        "Cc": "linux-rtc@vger.kernel.org",
        "Message-ID": "<3b43da73-ff4e-4519-d1c7-266b17cc5d05@gmail.com>",
        "Date": "Sat, 26 Aug 2017 21:16:34 +0200",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101\n\tThunderbird/52.3.0",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain; charset=utf-8",
        "Content-Transfer-Encoding": "7bit",
        "Sender": "linux-rtc-owner@vger.kernel.org",
        "Precedence": "bulk",
        "List-ID": "<linux-rtc.vger.kernel.org>",
        "X-Mailing-List": "linux-rtc@vger.kernel.org"
    },
    "content": "Some drivers use element wday of the struct rtc_time which is passed to\ncallback set_time. However element wday may incorrectly or not be\npopulated if struct rtc_time is coming from userspace via rtc_dev_ioctl.\nrtc_valid_tm() doesn't check element wday.\n\nTherefore convert struct rtc_time to time64_t and then use\nrtc_time64_to_tm to generate a struct rtc_time with all elements properly\npopulated.\n\nSigned-off-by: Heiner Kallweit <hkallweit1@gmail.com>\n---\n drivers/rtc/interface.c | 24 ++++++++++++++++--------\n 1 file changed, 16 insertions(+), 8 deletions(-)",
    "diff": "diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c\nindex 8cec9a02..5a53c590 100644\n--- a/drivers/rtc/interface.c\n+++ b/drivers/rtc/interface.c\n@@ -59,28 +59,36 @@ EXPORT_SYMBOL_GPL(rtc_read_time);\n \n int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)\n {\n+\ttime64_t secs64;\n \tint err;\n \n \terr = rtc_valid_tm(tm);\n \tif (err != 0)\n \t\treturn err;\n \n+\tsecs64 = rtc_tm_to_time64(tm);\n+\n \terr = mutex_lock_interruptible(&rtc->ops_lock);\n \tif (err)\n \t\treturn err;\n \n \tif (!rtc->ops)\n \t\terr = -ENODEV;\n-\telse if (rtc->ops->set_time)\n-\t\terr = rtc->ops->set_time(rtc->dev.parent, tm);\n-\telse if (rtc->ops->set_mmss64) {\n-\t\ttime64_t secs64 = rtc_tm_to_time64(tm);\n-\n+\telse if (rtc->ops->set_time) {\n+\t\tstruct rtc_time tmp;\n+\n+\t\t/*\n+\t\t * element wday of tm may not be set, therefore use\n+\t\t * rtc_time64_to_tm to generate a struct rtc_time\n+\t\t * with all elements being properly populated\n+\t\t */\n+\t\trtc_time64_to_tm(secs64, &tmp);\n+\t\terr = rtc->ops->set_time(rtc->dev.parent, &tmp);\n+\t} else if (rtc->ops->set_mmss64)\n \t\terr = rtc->ops->set_mmss64(rtc->dev.parent, secs64);\n-\t} else if (rtc->ops->set_mmss) {\n-\t\ttime64_t secs64 = rtc_tm_to_time64(tm);\n+\telse if (rtc->ops->set_mmss)\n \t\terr = rtc->ops->set_mmss(rtc->dev.parent, secs64);\n-\t} else\n+\telse\n \t\terr = -EINVAL;\n \n \tpm_stay_awake(rtc->dev.parent);\n",
    "prefixes": []
}