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Commit a5360df9 authored by Wolfram Sang's avatar Wolfram Sang Committed by Dominik Brodowski
Browse files

pcmcia/yenta: guide users in case of problems with O2-bridges 



Some cards need the speedups on, some need them off. As we can't detect
this reliably, at least give the users a hint how to tweak the system.

Reported-by: default avatarDavid Bluecame <david.bluecame@gmail.com>
Signed-off-by: default avatarWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
parent 3c7d2b76

drivers/pcmcia/o2micro.h

+2 −2
Original line number Diff line number Diff line
@@ -153,14 +153,14 @@ static int o2micro_override(struct yenta_socket *socket) 


		if (use_speedup) {

			dev_info(&socket->dev->dev,

				"O2: enabling read prefetch/write burst\n");

				"O2: enabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=off'\n");

			config_writeb(socket, O2_RESERVED1,

				      a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST);

			config_writeb(socket, O2_RESERVED2,

				      b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST);

		} else {

			dev_info(&socket->dev->dev,

				"O2: disabling read prefetch/write burst\n");

				"O2: disabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=on'\n");

			config_writeb(socket, O2_RESERVED1,

				      a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST));

			config_writeb(socket, O2_RESERVED2,