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charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220629004356epcas2p408afcd3d19d926a86d98e887e25e93bc References: <20220629004141.51484-1-chanho61.park@samsung.com> <4fb8c922-08aa-2ee3-8073-95b8a26bf5db@samsung.com> <000001d89588$936d14c0$ba473e40$@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org > Right. The problem is elsewhere. You used rd_reg(port, S3C2410_UCON) > instead of rd_regl(port, S3C2410_UCON) what always zeroed upper bits. I > will send a fix in a few minutes. Oops. You're right. Thanks for pointing it out and send the fix. Best Regards, Chanho Park