From f97c9a5968f35f2e365c1878991299e001fe3166 Mon Sep 17 00:00:00 2001
From: Jelle Raaijmakers <jelle@gmta.nl>
Date: Wed, 24 Nov 2021 12:20:20 +0100
Subject: Kernel: Allow higher audio sample rates than 65kHZ (`u16`)

Executing `asctl set r 96000` no longer results in weird sample rates
being set on the audio devices. SB16 checks for a sample rate between 1
and 44100 Hz, while AC97 implements double-rate support which allows
sample rates between 8kHz and 96kHZ.
---
 Kernel/Devices/Audio/SB16.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'Kernel/Devices/Audio/SB16.cpp')

diff --git a/Kernel/Devices/Audio/SB16.cpp b/Kernel/Devices/Audio/SB16.cpp
index e5bfef119d..ce2cdc8d63 100644
--- a/Kernel/Devices/Audio/SB16.cpp
+++ b/Kernel/Devices/Audio/SB16.cpp
@@ -123,9 +123,10 @@ ErrorOr<void> SB16::ioctl(OpenFileDescription&, unsigned request, Userspace<void
         return copy_to_user(output, &m_sample_rate);
     }
     case SOUNDCARD_IOCTL_SET_SAMPLE_RATE: {
-        auto sample_rate_value = static_cast<u16>(arg.ptr());
-        if (sample_rate_value == 0)
-            return EINVAL;
+        auto sample_rate_input = static_cast<u32>(arg.ptr());
+        if (sample_rate_input == 0 || sample_rate_input > 44100)
+            return ENOTSUP;
+        auto sample_rate_value = static_cast<u16>(sample_rate_input);
         if (m_sample_rate != sample_rate_value)
             set_sample_rate(sample_rate_value);
         return {};
-- 
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