Date: Tue, 12 Oct 2021 11:57:52 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 258994] iic(4): Panics on Nanopi Neo when using 16-bit device addressing width: panic: Assertion strlen(description) < MAX_W_NAME failed at ... sys/kern/subr_witness.c:1914 Message-ID: <bug-258994-227-APejOQHAAf@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-258994-227@https.bugs.freebsd.org/bugzilla/> References: <bug-258994-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258994 --- Comment #4 from alydiomc@yahoo.com --- Comment on attachment 228624 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D228624 twsi.c driver Seems the driver does not handle 16bit wide addressing properly. I made some modification. Looks to be working. root@nanopi-neo:~/prog/I2C # ./i2c -s -f /dev/iic0 Scanning I2C devices on /dev/iic0: 57 68 root@nanopi-neo:~/prog/I2C # ./i2c -a 0x57 -f /dev/iic0 -d r -o 0 -w 16 -c = 16 -m tr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f root@nanopi-neo:~/prog/I2C # echo -n "test" | ./i2c -a 0x57 -f /dev/iic0 -d= w -o 0x6 -w 16 -c 4 -m tr root@nanopi-neo:~/prog/I2C # ./i2c -a 0x57 -f /dev/iic0 -d r -o 0 -w 16 -c = 16 -m tr 00 01 02 03 04 05 74 65 73 74 0a 0b 0c 0d 0e 0f root@nanopi-neo:~/prog/I2C # date;./ds1307 -s;./ds1307 -r Tue Oct 12 19:45:35 PST 2021 19:45:35 12/10/2021 root@nanopi-neo:~/prog/I2C # ./i2c -a 0x68 -f /dev/iic0 -d r -o 0 -w 8 -c 1= -m tr 15 root@nanopi-neo:~/prog/I2C # ./i2c -a 0x68 -f /dev/iic0 -d r -o 0 -w 8 -c 1= -m tr 16 --=20 You are receiving this mail because: You are the assignee for the bug.=
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