Are there any issues I should be aware of when using the DUP package for the Realtek RTS5227 card reader on Red Hat Enterprise Linux 6.5?

Solution Verified - Updated -

Environment

Red Hat Enterprise Linux 6.5
Driver Update Program (DUP) package for the Realtek RTS5227 card reader
Toshiba Portege R30
Toshiba Tecra Z40

Issue

Are there any issues I should be aware of when using the DUP package for the Realtek RTS5227 card reader on Red Hat Enterprise Linux 6.5?

Resolution

Several issues have been seen with this DUP driver, but none cause real problems on the systems where the driver is intended to be used.

1) A kernel panic may occur if the drivers are installed on a system and then the rtsx_pci_sdmmc and rtsx_pci_ms drivers are removed at the same time with the rmmod command. This has been seen during testing on certain non-Toshiba laptops. A fix for this problem is being developed and is expected to be delivered in an errata kernel for Red Hat Enterprise Linux 6.5. Information about the issue is recorded in bug 1120675. This is a private bug, but it can be referenced in support cases if you need to know more about the issue.

To avoid this issue, only install these packages if they are necessary. As of this writing, the drivers are only intended for use on the Toshiba Portege R30 and Toshiba Tecra Z40.

2) An error similar to the one below may appear in the /var/log/messages file when a SD card is inserted into the reader for the first time after each system boot. This error is a warning and will not affect the functioning of the system or the card reader.

Example error message

Aug 27 12:40:10 localhost kernel: kobject_add_internal failed for mmc with -EEXIST, don't try to register things with the same name in the same directory.

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