disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/media/usb/dvb-usb-v2/ce6230.c
..
..
@@ -101,6 +101,10 @@
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 		if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
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 			if (msg[i].addr ==
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 				ce6230_zl10353_config.demod_address) {
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+				if (msg[i].len < 1) {
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+					i = -EOPNOTSUPP;
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+					break;
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+				}
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 				req.cmd = DEMOD_READ;
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 				req.value = msg[i].addr >> 1;
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 				req.index = msg[i].buf[0];
..
..
@@ -117,6 +121,10 @@
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 		} else {
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 			if (msg[i].addr ==
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 				ce6230_zl10353_config.demod_address) {
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+				if (msg[i].len < 1) {
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+					i = -EOPNOTSUPP;
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+					break;
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+				}
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 				req.cmd = DEMOD_WRITE;
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 				req.value = msg[i].addr >> 1;
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 				req.index = msg[i].buf[0];