disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/media/dvb-frontends/mt312.c
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@@ -1,23 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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     Driver for Zarlink VP310/MT312/ZL10313 Satellite Channel Decoder
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4
 
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     Copyright (C) 2003 Andreas Oberritter <obi@linuxtv.org>
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     Copyright (C) 2008 Matthias Schwarzott <zzam@gentoo.org>
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-    This program is free software; you can redistribute it and/or modify
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-    it under the terms of the GNU General Public License as published by
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-    the Free Software Foundation; either version 2 of the License, or
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-    (at your option) any later version.
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-
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-    This program is distributed in the hope that it will be useful,
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-
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-    GNU General Public License for more details.
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-
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-    You should have received a copy of the GNU General Public License
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-    along with this program; if not, write to the Free Software
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-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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8
 
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     References:
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     http://products.zarlink.com/product_profiles/MT312.htm
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@@ -148,11 +135,6 @@
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 	return mt312_write(state, reg, &tmp, 1);
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 }
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-static inline u32 mt312_div(u32 a, u32 b)
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-{
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-	return (a + (b / 2)) / b;
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-}
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-
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 static int mt312_reset(struct mt312_state *state, const u8 full)
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 {
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 	return mt312_writereg(state, RESET, full ? 0x80 : 0x40);
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@@ -200,7 +182,7 @@
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 		monitor = (buf[0] << 8) | buf[1];
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 		dprintk("sr(auto) = %u\n",
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-		       mt312_div(monitor * 15625, 4));
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+			DIV_ROUND_CLOSEST(monitor * 15625, 4));
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 	} else {
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 		ret = mt312_writereg(state, MON_CTRL, 0x05);
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 		if (ret < 0)
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@@ -304,10 +286,10 @@
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 	}
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 	/* SYS_CLK */
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-	buf[0] = mt312_div(state->xtal * state->freq_mult * 2, 1000000);
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+	buf[0] = DIV_ROUND_CLOSEST(state->xtal * state->freq_mult * 2, 1000000);
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 	/* DISEQC_RATIO */
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-	buf[1] = mt312_div(state->xtal, 22000 * 4);
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+	buf[1] = DIV_ROUND_CLOSEST(state->xtal, 22000 * 4);
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 	ret = mt312_write(state, SYS_CLK, buf, sizeof(buf));
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 	if (ret < 0)
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@@ -623,7 +605,7 @@
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 	}
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 	/* sr = (u16)(sr * 256.0 / 1000000.0) */
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-	sr = mt312_div(p->symbol_rate * 4, 15625);
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+	sr = DIV_ROUND_CLOSEST(p->symbol_rate * 4, 15625);
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 	/* SYM_RATE */
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 	buf[0] = (sr >> 8) & 0x3f;
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@@ -645,7 +627,9 @@
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 	if (ret < 0)
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 		return ret;
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-	mt312_reset(state, 0);
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+	ret = mt312_reset(state, 0);
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+	if (ret < 0)
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+		return ret;
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 	return 0;
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 }
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@@ -815,17 +799,20 @@
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 	switch (state->id) {
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 	case ID_VP310:
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-		strcpy(state->frontend.ops.info.name, "Zarlink VP310 DVB-S");
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+		strscpy(state->frontend.ops.info.name, "Zarlink VP310 DVB-S",
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+			sizeof(state->frontend.ops.info.name));
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 		state->xtal = MT312_PLL_CLK;
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 		state->freq_mult = 9;
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 		break;
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 	case ID_MT312:
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-		strcpy(state->frontend.ops.info.name, "Zarlink MT312 DVB-S");
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+		strscpy(state->frontend.ops.info.name, "Zarlink MT312 DVB-S",
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+			sizeof(state->frontend.ops.info.name));
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 		state->xtal = MT312_PLL_CLK;
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 		state->freq_mult = 6;
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 		break;
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 	case ID_ZL10313:
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-		strcpy(state->frontend.ops.info.name, "Zarlink ZL10313 DVB-S");
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+		strscpy(state->frontend.ops.info.name, "Zarlink ZL10313 DVB-S",
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+			sizeof(state->frontend.ops.info.name));
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 		state->xtal = MT312_PLL_CLK_10_111;
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 		state->freq_mult = 9;
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 		break;
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@@ -840,7 +827,7 @@
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 	kfree(state);
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 	return NULL;
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 }
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-EXPORT_SYMBOL(mt312_attach);
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+EXPORT_SYMBOL_GPL(mt312_attach);
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 module_param(debug, int, 0644);
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 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");