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ahci_drv: set 'Cmd::St' to 1 before writing 'Sact' register

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Issue #3058
This commit is contained in:
Christian Prochaska 2019-11-24 04:06:31 +01:00 committed by Christian Helmuth
parent 57d080d4f8
commit 4c74f4792c
1 changed files with 2 additions and 0 deletions
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2
repos/os/src/drivers/ahci/ata_driver.h
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@ -138,6 +138,8 @@ struct Ncq_command : Io_command
unsigned slot) override unsigned slot) override
{ {
table.fis.fpdma(read, block_number, count, slot); table.fis.fpdma(read, block_number, count, slot);
/* ensure that 'Cmd::St' is 1 before writing 'Sact' */
port.start();
/* set pending */ /* set pending */
port.write<Port::Sact>(1U << slot); port.write<Port::Sact>(1U << slot);
} }