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

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